CN102816173B - Preparation method of cefodizime sodium - Google Patents

Preparation method of cefodizime sodium Download PDF

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CN102816173B
CN102816173B CN201210317362.4A CN201210317362A CN102816173B CN 102816173 B CN102816173 B CN 102816173B CN 201210317362 A CN201210317362 A CN 201210317362A CN 102816173 B CN102816173 B CN 102816173B
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sodium
compound
acetone
washing
preparation
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CN102816173A (en
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赵新祥
王玲
胡方锋
张振安
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Amicogen China Biopharm Co Ltd
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Shandong Lukang Pharmaceutical Co Ltd
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Abstract

The invention relates to a preparation method of cefodizime sodium. By the preparation method, GCLE substitutes for traditional 7-ACA (7-Aminocephalosporanic acid) as starting materials to synthesize the cefodizime sodium, and after decoloration, reaction liquor is not subjected to separation and purification but is directly dropwise added with salt-forming agents for reaction so that the cefodizime sodium is obtained. The preparation method is short in step and less in side reaction, solves the problem of high superpolymer content of a final product and enables the superpolymer content to be decreased from 1.0% to smaller than 0.1%, product purity is improved and is above 99.8%, and product yield is improved and is above 90% by the aid of the raw material ratio and mixed solvent. Additionally, the preparation method is shorter in process step, timesaving, simple in process, high in yield and product purity, low in cost, cheap and available in raw materials and suitable for industrial production.

Description

A kind of preparation method of Cefodizime Sodium
Technical field
The invention belongs to the synthetic field of chemicals, be specifically related to a kind of GCLE of take and prepare the method for Cefodizime Sodium as starting raw material.
Background technology
Cefodizime Sodium, have another name called Cefodizime, English name is Cefodizime Sodium, its chemical name is: (6R, 7R)-7-[(2-amino-4-thiazolyl)-(methoxyimino) acetamido]-3-[[(5-carboxymethyl-4-methyl-2-thiazolyl) sulphur] methyl]-8-oxo-5-thia-1-azabicyclo [4.2.0] oct-2-ene-2-formic acid disodium salt, molecular formula: C 20h 18n 6o 7s 4na 2, molecular weight: 628.64, structural formula is as shown in compound V:
Cefodizime Sodium belongs to third generation cephalosporin for injections class microbiotic, by German Hirst company, developed, be mainly used in treating acute bacterial infection disease, the diseases such as lower respiratory infection, urinary system infection have certain effect to improving human immunity regulating power simultaneously.
At present, prepare Cefodizime Sodium and be all with 7-ACA or take the subsequent products cefotaxime acid of 7-ACA as raw material in prior art, easily produce by product in reaction process, affect quality product, purity is not high; Adopting 7-ACA is that raw material is prepared Cefodizime Sodium and existed yield low, and quality is not good enough, and long reaction time, is unfavorable for continuity, large-scale industrial production.Therefore, research and development technique simple, high yield, high quality, and be suitable for the synthetic technology of large-scale industrial production, become the task of top priority.
Cefodizime Sodium is mainly by Cefodizime acid preparation, and important in preparation process is exactly the dissolving of Cefodizime acid.US Patent No. 5126445 discloses Cefodizime acid has been suspended in water, drips triethylamine and dissolves, and to dripping Sodium isooctanoate solution in settled solution, separates out Cefodizime Sodium, and products obtained therefrom color is darker, need to refine, and affects quality product and yield.US Patent No. 4590267 discloses dissolves Cefodizime Sodium with sodium bicarbonate, drip alcohol and separate out Cefodizime Sodium, with sodium bicarbonate, dissolves, and dissolution time is long, and easily comprises undissolved sodium bicarbonate in products obtained therefrom, affects quality product.Chinese patent CN101239985 discloses Cefodizime acid has been suspended in two-phase system, add Sodium isooctanoate to stir entirely molten, layering, water layer adds alcohol to separate out Cefodizime Sodium, and its two-phase system is selected from methylene dichloride/water, tetrachloromethane/water, toluene/water or ethyl acetate/water, in the method, use a large amount of organic solvents, and the rate of recovery is low, contaminate environment, cost is higher, operation steps is many and complicated, and product purity is lower.Chinese patent CN101723958B discloses Cefodizime acid has been suspended in ethanol, dropping triethylamine dissolves, decolouring, to the ethanolic soln crystallization that drips Sodium isooctanoate in settled solution, suction filtration, with dehydrated alcohol and washing with acetone, dry, obtain Cefodizime Sodium, in the method, use a large amount of ethanol, production cost is higher, and operation steps is many and complicated.
Summary of the invention
In the present invention, in order to narrate conveniently, by GCLE, i.e. GCLE, referred to as chemical compounds I; First thyroidan acetic acid is referred to as compound ii; (6R, 7R)-7-amido]-3-[[(5-carboxymethyl-4-methyl-2-thiazolyl) sulphur] methyl]-8-oxo-5-thia-1-azabicyclo (4.2.0) oct-2-ene-2-formic acid is referred to as compound III; MEAM is referred to as compounds Ⅳ; Cefodizime Sodium is referred to as compound V.
For the deficiencies in the prior art part, the object of the present invention is to provide a kind of GCLE of take to replace traditional 7-ACA to prepare the method for Cefodizime Sodium as starting raw material, with the synthetic Cefodizime Sodium of GCLE two steps, solved the high problem of superpolymer content in prior art, this building-up reactions step is short, and side reaction is few, simple to operate, yield is high, and products obtained therefrom purity is high.
A preparation method for Cefodizime Sodium, employing chemical compounds I is starting raw material, concrete steps comprise:
(1) chemical compounds I and compound ii are suspended in the aqueous solution containing organic solvent, are heated to 50 ℃, stir to clarify, add catalyzer, the sodium hydrogen carbonate solution that is 8%-12% with massfraction or sodium carbonate solution are adjusted pH 5.0-5.5, reaction 1-2 hour, add after halogenated acid hydrolysis, then add activated carbon decolorizing, washing, the ammoniacal liquor that is 25%-28% with massfraction is adjusted pH 2.5-3.5, growing the grain, suction filtration, washing, vacuum-drying, obtains light yellow or off-white color crystalline powder, i.e. compound III;
(2) in mixed solvent, compound III and compounds Ⅳ are added to rear stirring, then drip organic bases reaction 1-2 hour, add activated carbon decolorizing, filter, washing, drip salt forming agent solution, slowly be stirred to muddiness and go out crystalline substance, growing the grain, suction filtration, washing, vacuum-drying, obtains white or off-white color compound V, i.e. Cefodizime Sodium.
Synthetic route is:
Wherein, the catalyzer described in step (1) is metal bromide or metal iodide, is preferably sodium iodide, and sodium iodide is participated in halogenating reaction ratio and is easier to, and consumption is little and reaction is thorough, and effect is better; Halogenated acid described in step (1) is trifluoroacetic acid.
In described step (1), the mass ratio of chemical compounds I and compound ii is 1:0.41-0.47, because chemical combination I is higher than compound ii cost, so this ratio range can guarantee expensive chemical compounds I, reacts completely; The mass ratio of chemical compounds I and catalyzer is 1:0.01-0.03, higher than this ratio range, reacts not thorough, residual height, and lower than this ratio range, the color of product is heavier, causes the waste of catalyzer simultaneously; The mass ratio of chemical compounds I and halogenated acid is 1:1.8-4.7, at this ratio range, can guarantee removing completely of 4 protecting group carboxyls in chemical compounds I, otherwise 4 protecting groups can not remove completely, increases the impurity in product, or causes the waste of raw material.
Organic solvent described in step (1) is acetone, and the described volume ratio containing acetone in the aqueous solution of organic solvent and water is 20:1-2, reacts more thorough in this proportional range, and yield is high, and the color of product is better simultaneously.
The mass ratio of the compound III described in step (2) and compounds Ⅳ is 1:1.37-1.71, higher than in this proportional range, causes the reaction of compound III not exclusively, and impurity raises; Lower than this, than row, cause the waste of compounds Ⅳ, aftertreatment is simultaneously also cumbersome.
Mixed solvent described in step (2) is the solvent of acetone or toluene and alcohol composition, and described alcohol is ethanol; Described mixed solvent is preferably the solvent of acetone and ethanol composition, and the volume ratio of acetone and ethanol is 1-3:1.The effect of mixed solvent is the solubleness that reduces Cefodizime Sodium, improves yield, and has good removal effect for the little impurity of polarity, has improved the purity of product.This proportional range is best solvent amount, and not only little to the solvability of generated sodium salt, yield is high, and the crystal formation of product is the bar-shaped crystal formation of rule, easily dry, easily packing.
Organic bases described in step (2) is a kind of of pyridine or triethylamine or diethylamine or TERTIARY BUTYL AMINE or aniline or morpholine, preferably triethylamine.The Main Function of described organic bases is the effect of dissolving and catalysis, still, from yield and the color of product, from alkalescence size, considers that the effect of triethylamine is gentleer.
Salt forming agent described in step (2) is a kind of in Sodium isooctanoate or sodium methylate or sodium-acetate, the mass ratio of compound III and salt forming agent is 1:0.15-0.95, described salt forming agent consumption is very few, salify is not thorough, affect product yield, salt forming agent consumption is excessive, and the residual height of organic acid, causes allergic phenomena.The preferred Sodium isooctanoate of wherein said salt forming agent, this is because the solvability of Sodium isooctanoate in organic solvent is larger, and the by product organic acid generating is also removed than being easier to.
In described step (1) and step (2), the temperature range of growing the grain process is 10 ℃-15 ℃, and rearing crystal time is 1 hour.
Salt forming agent solution in described step (2) is that salt forming agent is dissolved in to the solution forming in mixed solvent.Described step (2), in mixed solvent, adds rear stirring by compound III and compounds Ⅳ, then drips organic bases reaction 1-2 hour, adds activated carbon decolorizing, filters washing; Salt forming agent is dissolved in mixed solvent and is dripped, be slowly stirred to muddiness and go out crystalline substance, in order to separate out more polycrystal, drip again acetone or toluene, growing the grain, suction filtration, washing, vacuum-drying obtains white or off-white color compound V, i.e. Cefodizime Sodium.
GCLE, it is GCLE, continue 7-ACA, 7-ADCA(7-amino-3-desacetoxycephalosporanic acid) after another synthetic cephalosporins medicine parent nucleus, can replace 7-ACA for the preparation of cynnematin, its C-3 position is-CH 2cl, can, as lead compound, make C-3 position containing a series of cephalosporins medicines of two keys, thiomethyl, n-formyl sarcolysine base etc.Chlorine on its C-3 has increased reactive behavior, and C-4 position carboxyl, C-7 bit amino are protected, can reduce side reaction and occur while reacting in C-3 position, and products obtained therefrom purity is high, and appearance color is good.Take GCLE when parent nucleus is produced cynnematin, and product yield is higher, production technique is simpler, working condition milder, product cost are lower.GCLE be take cheap potassium penicillin G as starting raw material preparation, and product cost is low, and price is only 60% left and right of 7-ACA price.GCLE is by the development and production the earliest of Japanese Otsuka Kagaku K.K.; so far have the history of more than ten years; the synthetic production technology of recent year GCLE is very ripe; add the continuous expansion of domestic penicillin production capacity and the greater advantage of fermentation technique aspect; GCLE price significantly declines; not only in supply country, use at present, also a large amount of outlets, the synthetic cephalosporins medicine of GCLE demonstrates stronger quality and cost advantage.
Compared with prior art, its beneficial effect is in the present invention:
One, take GCLE and replace traditional 7-ACA as the synthetic Cefodizime Sodium of starting raw material, product yield is higher, production technique is simpler, working condition milder, product cost are lower.Due to chemical method, to prepare 7-ACA cost too high, be difficult to buy, and that enzyme process is prepared 7-ACA protein content is high, cause the finished product superpolymer content high, during medication, irritated probability is large, and the preparation method of Cefodizime Sodium of the present invention has solved the high problem of the finished product superpolymer content, and superpolymer content is reduced to below 0.1% from 1.0%, improved purity, purity is more than 99.8% simultaneously;
Two, in mixed solvent, compound III and compounds Ⅳ add organic alkali reaction and generate Cefodizime acid, add gac to decolour, reaction solution after decolouring, without purification procedures, is dissolved in salt forming agent in mixed solvent, directly drips salt forming agent solution reaction and generates Cefodizime Sodium, the use of described mixed solvent has reduced the solubleness of Cefodizime Sodium, improve yield, and had good removal effect for the impurity of little polarity, improved the purity of product; And synthetic intermediate Cefodizime acid needs, through crystallization, washing and drying process step, also to need again solubilizing agent to dissolve in reacting with salt forming agent in prior art.Step in the present invention (2) completes in mixed solvent, and the separating step in the middle of having saved, has shortened processing step, has saved the time; The use of the proportioning raw materials described in the present invention and mixed solvent, has improved yield, and product yield is reached more than 90%.
The preparation method of Cefodizime Sodium provided by the invention, step is short, side reaction is few, solved the high problem of the finished product superpolymer content, superpolymer content is reduced to below 0.1% from 1.0%, and has improved purity, product purity is more than 99.8%, described proportioning raw materials and the use of mixed solvent, improved yield, and product yield is reached more than 90%.The present invention has shortened processing step, has saved the time, and technique is simple, and yield is high, and cost is low, and product purity is high, and raw material is cheap and easy to get, is applicable to suitability for industrialized production.
Accompanying drawing explanation
Accompanying drawing 1 is the embodiment of the present invention 1 Cefodizime Sodium HPLC collection of illustrative plates;
Accompanying drawing 2 is the embodiment of the present invention 2 Cefodizime Sodium HPLC collection of illustrative plates;
Accompanying drawing 3 is the embodiment of the present invention 3 Cefodizime Sodium HPLC collection of illustrative plates;
Accompanying drawing 4 is the embodiment of the present invention 4 Cefodizime Sodium HPLC collection of illustrative plates.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, and described is only several concrete forms of implementation of the present invention, for the person of ordinary skill of the art, can also make many distortion and improvement.All do not exceed the distortion described in claim or improve all should be considered as scope of the present invention.
embodiment 1
The preparation method of Cefodizime Sodium, employing chemical compounds I is starting raw material, concrete steps comprise:
(1) chemical compounds I (GCLE) 30g and compound ii 12.3g are added in the system that contains 200mL acetone and 20mL water, be heated to 50 ℃, stir to clarify, add sodium iodide 0.3g, with massfraction, be that 10% sodium carbonate solution tune pH is 5.0, react 2 hours, add after 100g trifluoroacetic acid hydrolysis, add gac 1.5g decolouring, adopt 10mL acetone and the washing of 1mL water mixed liquid, the ammoniacal liquor that is 25% with massfraction is adjusted pH to 3.0, 10 ℃ of growing the grains 1 hour, suction filtration, 100mL water and 100mL acetone wash respectively, vacuum-drying, obtain 22.1g compound III, yield is 92%, purity is 98.76%,
(2) compound III 20g and compounds Ⅳ 27.4g are added in the mixed solvent system that contains 100mL toluene and 100mL methyl alcohol, drip triethylamine 23mL, 5 ℃ of reaction 1.5hr, add 1g activated carbon decolorizing, filter, 5mL toluene and the washing of 5mL methyl alcohol mixed liquor, standby;
Sodium isooctanoate 19g is dissolved in the mixing solutions of 25mL toluene and 25mL methyl alcohol, slowly splash in above-mentioned standby reaction solution, be slowly stirred to muddiness and go out crystalline substance, drip toluene 100mL, 10 ℃ of growing the grains 1 hour, suction filtration, 50mL toluene wash, vacuum-drying, obtain 28.5g compound V, yield is 91%, and purity is 99.84%, and superpolymer content is 0.083%.
embodiment 2
The preparation method of Cefodizime Sodium, employing chemical compounds I is starting raw material, concrete steps comprise:
(1) chemical compounds I (GCLE) 30g and compound ii 13.2g are added in the system that contains 200mL acetone and 15mL water, be heated to 50 ℃, stir to clarify, add Sodium Bromide 0.7g, with massfraction, be that 8% sodium hydrogen carbonate solution regulates pH to 5.5, react 1 hour, add after 141g trifluoroacetic acid hydrolysis, add gac 1.5g decolouring, 10mL acetone and the washing of 0.75mL water mixed liquid, it is 3.5 that the ammoniacal liquor that is 28% with massfraction is adjusted pH, 12 ℃ of growing the grains 1 hour, suction filtration, 100mL water and 100mL acetone wash respectively, vacuum-drying, obtain 21.8g compound III, yield is 91%, purity is 98.62%,
(2) compound III 20g and compounds Ⅳ 34.2g are added in the mixed solvent system that contains 200mL toluene and 100mL ethanol, drip diethylamine 23mL, 10 ℃ of reaction 1.5hr, add 1g activated carbon decolorizing, filter, 10mL toluene and the washing of 5mL alcohol mixeding liquid, standby;
Sodium methylate 3g is dissolved in the mixing solutions of 50mL toluene and 25mL ethanol, slowly splash in above-mentioned standby reaction solution, be slowly stirred to muddiness and go out crystalline substance, drip toluene 100mL, 12 ℃ of growing the grains 1 hour, suction filtration, 50mL toluene wash, vacuum-drying, obtain 28.2g compound V, yield is 90%, and purity is 99.80%, and superpolymer content is 0.09%.
embodiment 3
The preparation method of Cefodizime Sodium, employing chemical compounds I is starting raw material, concrete steps comprise:
(1) chemical compounds I (GCLE) 30g and compound ii 14.1g are added in the system that contains 200mL acetone and 10mL water, be heated to 50 ℃, stir to clarify, add Potassium Bromide 0.9g, the sodium hydrogen carbonate solution that is 12% with massfraction regulates pH to 5.2, react 2 hours, add after trifluoroacetic acid 54g hydrolysis, add gac 1.5g decolouring, 10mL acetone and the washing of 1mL water mixed liquid, the ammoniacal liquor that is 26% with massfraction is adjusted pH to 3.5, 15 ℃ of growing the grains 1 hour, suction filtration, 100mL water and 100mL acetone wash respectively, vacuum-drying, obtain 21.5g compound III, yield is 90%, purity is 98.56%,
(2) compound III 20g and compounds Ⅳ 30g are added in the mixed solvent system that contains 100mL acetone and 100mL methyl alcohol, drip TERTIARY BUTYL AMINE 23mL, 6 ℃ of reaction 1.5hr, add 1g activated carbon decolorizing and filter, and 5mL acetone and the washing of 5mL methyl alcohol mixed liquor are standby;
Sodium-acetate 10g is dissolved in the mixing solutions of 25mL acetone and 25mL methyl alcohol, slowly splash in above-mentioned standby reaction solution, be slowly stirred to muddiness and go out crystalline substance, drip acetone 100mL, 15 ℃ of growing the grains 1 hour, suction filtration, 50mL washing with acetone, vacuum-drying, obtain 28.4g compound V, yield is 90.6%, and purity is 99.86%, and superpolymer content is 0.08%.
embodiment 4
The preparation method of Cefodizime Sodium, employing chemical compounds I is starting raw material, concrete steps comprise:
(1) chemical compounds I (GCLE) 30g and compound ii 13g are added in the system that contains 200mL acetone and 20mL water, be heated to 50 ℃, stir to clarify, add 0.7g potassiumiodide, the sodium hydrogen carbonate solution that is 9% with massfraction regulates pH to 5.3, react 2 hours, add after 100g trifluoroacetic acid hydrolysis, add gac 1.5g decolouring, 10mL acetone and the washing of 1mL water mixed liquid, the ammoniacal liquor that is 27% with massfraction is adjusted pH to 2.5, 13 ℃ of growing the grains 1 hour, suction filtration, 100mL water and 100mL acetone wash respectively, vacuum-drying, obtain 21.7g compound III, yield is 91.5%, purity is 98.60%,
(2) compound III 20g and compounds Ⅳ 30g are added in the mixed solvent system that contains 100mL acetone and 100mL ethanol, drip pyridine 23mL, 8 ℃ are reacted 1.5 hours, add 1g activated carbon decolorizing, filter, and 5mL acetone and 5mL washing with alcohol, standby;
Sodium isooctanoate 10g is dissolved in the mixing solutions of 25mL acetone and 25mL ethanol, slowly splash in above-mentioned standby reaction solution, be slowly stirred to muddiness and go out crystalline substance, drip acetone 100mL, 13 ℃ of growing the grains 1 hour, suction filtration, 50mL washing with acetone, vacuum-drying, obtain 28.2g compound V, yield is 90%, and purity is 99.82%, and superpolymer content is 0.09%.
According to embodiment 1-4, can find out, the preparation method of Cefodizime Sodium provided by the invention, step is short, side reaction is few, has solved the high problem of the finished product superpolymer content, and superpolymer content is below 0.1%, product purity is more than 99.8%, and product yield reaches more than 90%; The present invention has shortened processing step, has saved the time, and technique is simple, and yield is high, and cost is low, and product purity is high, and supplementary material is cheap and easy to get, is applicable to suitability for industrialized production.

Claims (1)

1. a preparation method for Cefodizime Sodium, is characterized in that: employing chemical compounds I is starting raw material, and concrete steps comprise:
(1) chemical compounds I and compound ii are suspended in the aqueous solution containing organic solvent, are heated to 50 ℃, stir to clarify, add catalyzer, the sodium hydrogen carbonate solution that is 8%-12% with massfraction or sodium carbonate solution are adjusted pH to 5.0-5.5, reaction 1-2 hour, add after halogenated acid hydrolysis, then add activated carbon decolorizing, washing, the ammoniacal liquor that is 25%-28% with massfraction is adjusted pH to 2.5-3.5, growing the grain, suction filtration, washing, vacuum-drying, obtains light yellow or off-white color crystalline powder, i.e. compound III;
(2) in mixed solvent, compound III and compounds Ⅳ are added to rear stirring, then drip organic bases reaction 1-2 hour, add activated carbon decolorizing, filter, washing, drip salt forming agent solution, slowly be stirred to muddiness and go out crystalline substance, growing the grain, suction filtration, washing, vacuum-drying, obtains white or off-white color compound V, i.e. Cefodizime Sodium;
Synthetic route is:
Catalyzer described in step (1) is metal bromide or metal iodide;
Halogenated acid described in step (1) is trifluoroacetic acid;
Chemical compounds I in described step (1): compound ii: catalyzer: the mass ratio of halogenated acid is 1:0.41-0.47:0.01-0.03:1.8-4.7;
Organic solvent described in step (1) is acetone, and the described volume ratio containing acetone in the aqueous solution of organic solvent and water is 20:1-2;
The mass ratio of the compound III described in step (2) and compounds Ⅳ is 1:1.37-1.71;
Mixed solvent described in step (2) is the solvent that acetone and ethanol form, and its volume ratio is 1-3:1;
Organic bases described in step (2) is a kind of of pyridine or triethylamine or diethylamine or TERTIARY BUTYL AMINE or aniline or morpholine;
Salt forming agent described in step (2) is Sodium isooctanoate or sodium methylate or sodium-acetate, and the mass ratio of compound III and salt forming agent is 1:0.15-0.95.
CN201210317362.4A 2012-08-31 2012-08-31 Preparation method of cefodizime sodium Active CN102816173B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101143870A (en) * 2006-09-12 2008-03-19 黄振华 Novel cephalosporin derivative
CN101239985A (en) * 2008-03-12 2008-08-13 齐鲁安替制药有限公司 Method for preparing cefodizime sodium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101143870A (en) * 2006-09-12 2008-03-19 黄振华 Novel cephalosporin derivative
CN101239985A (en) * 2008-03-12 2008-08-13 齐鲁安替制药有限公司 Method for preparing cefodizime sodium

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Denomination of invention: A preparation method of cefodizime sodium

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