Impurities and Metabolites

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Chemical Impurities

Catalog No. Product Name Enrichment
Quantity Price
65048 "6-Fulvestrant
1 mg $725   Add to Cart
10 mg $2,800   Add to Cart
84865 4,5-Dehydro Pregabalin Formate
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78813 4-Chloro clindamycin
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62695 Acarbose D-Fructose 1,6,6’’,6’’’’’’-Tetra-tert- butyldimethylsilyloxymethyl Ester
1 mg $650   Add to Cart
10 mg $2,200   Add to Cart
62694 Acarbose D-Fructose Impurity
Synonyms:
Acarbose impurity A; Acarbose EP impurity A;
1 mg $490   Add to Cart
5 mg $1,490   Add to Cart
18991 Acetaminophen Acetate (Acetaminophen Impurity)
Synonyms:
N-[4-(Acetyloxy)phenyl]acetamide; 4’-Hydroxyacetanilide Acetate; 4’-Acetoxyacetanilide; 4-Acetamidophenyl Acetate; O-Acetylparacetamol; p-Acetamidophenyl Acetate; p-Acetoxyacetanilide; NSC 33893; NSC 6083; Paracetamol Impurity H;
1 g $875   Add to Cart
10 g $2,000   Add to Cart
62719 20α-Acetoxy-4-pregnen-3-one
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78617 1-Acetyl-2-imidazolidinone
Synonyms:
Clonidine Impurity A;
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42718 Acetylclonidine
Synonyms:
Clonidine Related Compound A; Clonidine EP Impurity B;
1 mg $190   Add to Cart
5 mg $590   Add to Cart
38450 3-(Acetylmethylamino)-1-propanesulfonic Acid Calcium Salt
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62766 17-(Acetyloxy)-3-ethoxy-pregna-3,5-dien-20-one
250 mg $650   Add to Cart
2.5 g $2,200   Add to Cart
6212 Acetylsalicylsalicylic Acid
Synonyms:
2-(Acetyloxy)benzoic Acid 2-Carboxyphenyl Ester; Acesalum; Diplosal Acetate; Diplosalacetat; Salicylacetylsalicylic Acid; Acetysalicyclic acid impurity C; Aspirin Impurity D;
10 mg $860   Add to Cart
50 mg $1,880   Add to Cart
78115 α,α-Dimethyl-4-[(methylamino)methyl]-2-thiazolemethanol hydrochloride
Synonyms:
Cobicistat impurity;
5 mg $190   Add to Cart
25 mg $590   Add to Cart
67775 N-(4-(2-Amino-1-(4-chlorophenyl)-2-oxoethyl)-5-chloro-2- methylphenyl)-2-hydroxy-3,5-diiodobenzamide
Synonyms:
Closantel Impurity D;
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62870 5-Amino-2-carboxy-4-cyano-3-thiopheneacetic Acid
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67774 2-(4-Amino-2-chloro-5-methylphenyl)-2-(4-chlorophenyl) acetonitrile
Synonyms:
Closantel Impurity B;
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53860 5-Amino-3-(4-sulfonylphenyl)salicyclic Acid
Synonyms:
Mesalamine Impurity P;
10 mg $2,100   Add to Cart
62898 [2-[2-Amino-3-hydroxy-2-(hydroxymethyl)propoxy]-1-hydroxypropyl] phosphonic Acid
Synonyms:
Fosfomycin EP-Impurity B;
0.25 mg $590   Add to Cart
1 mg $1,790   Add to Cart
62897 2-Amino-3-hydroxy-2-(hydroxymethyl)propyl Phosphate Barium Salt
10 mg $650   Add to Cart
100 mg $2,200   Add to Cart
89361 N-[4-[3-[2-Amino-4-(formylamino)-1,6-dihydro-6-oxo-5-pyrimidinyl] -3-oxopropyl]benzoyl]-L-glutamic Acid
Synonyms:
Pemetrexed Seco-indolone;
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67772 [2-[(2-Amino-4-chlorophenyl)amino]phenyl](4-methyl-1-piperazinyl) methanone
Synonyms:
Clozapine EP Impurity D;
1 mg $190   Add to Cart
5 mg $590   Add to Cart
62862 (1R,3S)-3-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl] cyclopentanemethanol
5 mg $675   Add to Cart
50 mg $2,400   Add to Cart
D62863 (1R,3S)-3-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl] cyclopentanemethanol-d4
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62891 2-Amino-7-ethyl-4(3H)-pteridinone
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78471 4-Amino-N-((4-benzyl-2-morpholinyl)-methyl)-5-chloro-2- ethoxybenzamide
Synonyms:
Cisapride Related Compound; Mosapride Impurity E;
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38618 (6-Aminohexyl)trimethylammonium bromide hydrobromide
Synonyms:
Colesevelam Aminoquat Impurity HBr;
1 mg $190   Add to Cart
5 mg $590   Add to Cart
32288 4-Aminophenol
Synonyms:
Acetaminophen Impurity K;
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D1283 4-Aminophenol-d7 97%D
0.5 g $865   Add to Cart
1 g $1,550   Add to Cart
63182 Bis(3-Aminophenyl) Sulfone
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19900 (Z)-2-(2-Aminothiazol-4-yl)-N-(2,2-dihydroxyethyl)-2- (hydroxyimino)acetamide
Synonyms:
(Z)-2-Amino-N-(2,2-dihydroxyethyl)-α-(hydroxyimino)-4- thiazoleacetamide;
5 mg $890   Add to Cart
50 mg $2,620   Add to Cart
62957 Amylostatin XG 1-Thiophenyl Nonaacetate
10 mg $650   Add to Cart
25 mg $800   Add to Cart
100 mg $2,175   Add to Cart
62958 Amylostatin XG Octaacetate
25 mg $675   Add to Cart
100 mg $1,025   Add to Cart
250 mg $2,050   Add to Cart
62959 Amylostatin XG Octamethoxybenzyl Ether
1 mg $625   Add to Cart
5 mg $750   Add to Cart
25 mg $1,250   Add to Cart
62969 9,10-Anhydro-8-desacetyl-8-carboxy Daunorubicin HCl
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18406 Atorvastatin oxirane impurity
Synonyms:
3-(4-Fluorobenzoyl)-2-isobutyryl-3-phenyloxirane-2-carboxylic Acid Phenylamide;
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63036 (+/-)-Atovaquone Impurity C
Synonyms:
Atovaquone EP Impurity C; Didehydro Atovaquone; Didehydroatovaquone;
5 mg $690   Add to Cart
D63037 (+/-)-Atovaquone Impurity C-d5
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63081 Beclomethasone 21-Butyrate 17-Propionate
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63128 Benzyl Hydroxy(4-phenylbutyl)phosphinoacetate
1 g $620   Add to Cart
10 g $1,460   Add to Cart
63141 [1-[(Benzyloxy)methyl]cyclopropyl]methanol
250 mg $625   Add to Cart
2.5 g $2,000   Add to Cart
63161 Betamethasone 17-Butyrate
100 mg $625   Add to Cart
1 g $2,000   Add to Cart
63162 Betamethasone 17-Butyrate 21-O-Tosyl
50 mg $650   Add to Cart
500 mg $2,200   Add to Cart
63160 Betamethasone 17-propionate 21-mesylate
Synonyms:
Clobetasol propionate impurity I;
1 mg $190   Add to Cart
5 mg $590   Add to Cart
63159 Betamethasone Cyclic 17,21-(Ethyl Orthopropionate)
10 mg $640   Add to Cart
100 mg $2,120   Add to Cart
78598 1,3-Bis(2-acetyl-3-hydroxyphenoxy)-2-hydroxypropane
Synonyms:
Cromolyn Related Compound A; Sodium Cromoglicate Impurity 2;
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63212 Bisdescarboxy Ranelate
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63287 6α-Bromo Beclomethasone Dipropionate
5 mg $675   Add to Cart
50 mg $2,400   Add to Cart
63288 6β-Bromo Beclomethasone Dipropionate
10 mg $640   Add to Cart
100 mg $2,120   Add to Cart
7878 1-Bromo-6-(trimethylammonium)hexyl Bromide
Synonyms:
Colesevelam Bromoquat Impurity;
10 mg $290   Add to Cart
50 mg $890   Add to Cart
63290 6-Bromo-betamethasone 17,21-Dipropionate
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63377 (E)-4-((tert-Butyldimethylsilyl)oxy)but-2-enoic Acid Benzyl Ester
50 mg $625   Add to Cart
500 mg $2,000   Add to Cart
63397 16α,17-[(1RS)-Butylidenebis(oxy)]-11β-hydroxy-17- (hydroxymethyl)-D-homoandrosta-1,4-diene-3,17a-dione (Mixture of Diastereomers)
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63457 10-Camphorsulfonic Acid Ethyl Ester
1 g $640   Add to Cart
10 g $2,120   Add to Cart
63477 2,2’’-[Carbonylbis(thio)]bisethanesulfonic Acid Dipotassium Salt
10 mg $675   Add to Cart
100 mg $2,400   Add to Cart
D63478 2,2’’-[Carbonylbis(thio)]bisethanesulfonic Acid-d8 Disodium Salt
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63492 21-Carboxylic Acid Fluticasone Dimer Impurity
2.5 mg $675   Add to Cart
10 mg $1,125   Add to Cart
25 mg $2,250   Add to Cart
78223 Carglumic acid impurity A
Synonyms:
(3-(2,5-Dioxoimidazolidin-4-yl)propanoic Acid);
5 mg $790   Add to Cart
C78222 Carglumic acid impurity C
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55477 delta2-Ceftazidime
Synonyms:
Ceftazidime Impurity A;
1 mg $640   Add to Cart
10 mg $2,120   Add to Cart
44566 Chlorhexidine digluconate impurity N
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63690 Chlorhexidine DiHCl Impurity B
1 mg $680   Add to Cart
10 mg $2,440   Add to Cart
63597 1-Chloro Dihydro Dutasteride
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63726 9-Chloro Triamcinolone Acetonide 21-Acetate
1 mg $625   Add to Cart
10 mg $2,000   Add to Cart
63626 (11β,16α,17α)-9-Chloro-17-(2,2-dioxido-5H-1,2- oxathiol-4-yl)-17-[(2-furanylcarbonyl)oxy]-11-hydroxy-16-methyl- androsta-1,4-dien-3-one;
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63627 (16α)-21-Chloro-17-[(2-furanylcarbonyl)oxy]-16-methyl-pregna- 1,4-diene-3,11,20-trione
2.5 mg $650   Add to Cart
25 mg $2,200   Add to Cart
D63653 4-[2-(5-Chloro-2-methoxybenzamido)ethyl]benzene Sulfonyl 1- Butylurea-d9
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63729 2-[2-[[4-[(5S)-5-[[[(5-Chloro-2-thienyl)carbonyl]amino]methyl]-2- oxo-3-oxazolidinyl]phenyl]amino]ethoxy]-acetic acid hydrochloride
Synonyms:
Rivaroxaban Impurity A Hydrochloride;
5 mg $390   Add to Cart
68612 N-(5-Chloro-4-((4-chlorophenyl)(cyano)methyl)-2-methylphenyl)-2- hydroxy-5-iodobenzamide
Synonyms:
Closantel impurity I;
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68658 2-(2-Chloro-4-(2-hydroxy-3,5-diiodobenzamido)-5-methylphenyl)-2- (4-chlorophenyl)acetic acid
Synonyms:
Closantel Impurity C;
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55623 N-[5-Chloro-4-(4-chlorobenzoyl)-2-methylphenyl]-2-hydroxy-3,5- diiodobenzamide
Synonyms:
Closantel impurity F;
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68641 (17R)-4’’-Chloro-5’’-ethyl-9-fluoro-11β-hydroxy-16β- methylspiro[androsta-1,4-diene-17,2’’(3’’H)-furan]-3,3’’-dione
Synonyms:
Clobetasol Propionate USP Related Compound A;
50 mg $650   Add to Cart
500 mg $2,200   Add to Cart
8294 8-Chloro-5,10-dihydro-11H-dibenzo[b,e][1,4]-diazepin-11-one
Synonyms:
Clozapine Impurity A;
50 mg $190   Add to Cart
250 mg $590   Add to Cart
63622 (11β)-21-Chloro-9-fluoro-11-hydroxy-16-methylpregna-1,4,16- triene-3,20-dione
Synonyms:
Clobetasol Propionate Impurity B;
1 mg $190   Add to Cart
5 mg $590   Add to Cart
78533 2-Chloro-N-(2-(2-chlorobenzoyl)-4-nitrophenyl)acetamide)
Synonyms:
Clonazepam Impurity 1; 2-Chloroacetylamido-5-nitro-2’-chlorobenzophenone;
250 mg $290   Add to Cart
1 g $890   Add to Cart
68608 3-Chloro-N-(5-chloro-4-((4-chlorophenyl)(cyano)methyl)-2- methylphenyl)-2-hydroxy-5-iodobenzamide
Synonyms:
Closantel impurity E;
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87268 6-α-Chloro-triamcinolone-acetonide acetate
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75615 3-Chloro-Vortioxetine Hydrobromide
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75616 3-Chloro-Vortioxetine Hydrobromide
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50240 2-Chlorobenzophenone
Synonyms:
Clotrimazole Impurity E;
1 g $90   Add to Cart
5 g $290   Add to Cart
63588 1-(3-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indole-3-acetic Acid Methyl Ester
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63589 1-(2-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indole-3-acetic Acid Methyl Ester
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63885 2-(4-Chlorobutyl)-5-cyclohexylamino-2H-tetrazole
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63197 N,N-Bis(2-chloroethyl)-N’’,N’’’’-bis(3-hydroxypropyl)phosphoric Triamide
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63195 5-[Bis(2-chloroethyl)amino]-1-methyl-1H-benzimidazole-2-butanoic Acid Methyl Ester
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55693 3-Chloroiminodibenzyl
Synonyms:
Clomipramine HCl EP Impurity F;
1 g $190   Add to Cart
5 g $590   Add to Cart
63645 3-Chloroindomethacin
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63687 4-Chlorophenyl Phenyl Sulfone
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50359 1-(4-Chlorophenyl)-1-phenylethanol
Synonyms:
Clemastine Fumarate Impurity C;
50 mg $190   Add to Cart
250 mg $590   Add to Cart
91703 5-(4-Chlorophenyl)-3,5-dihydro-3-imino-2-phenazinamine
Synonyms:
Clofazimine Iminophenazine Impurity; ; Clofazimine Impurity 1;
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55944 3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic Acid
Synonyms:
Cloxacillin EP Impurity D;
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55892 (2-Chlorophenyl)diphenylmethanol
Synonyms:
Clotrimazole Impurity A;
100 mg $590   Add to Cart
25 mg $190   Add to Cart
55986 2-Chlorotrityl chloride
Synonyms:
Clotrimazole impurity C;
1 g $190   Add to Cart
5 g $590   Add to Cart
77836 Citalopram carboxylic acid impurity
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77835 Citalopram chloromethyl quartenary ammonium salt
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77841 Citalopram descyano impurity oxalate
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77840 Citalopram dimethylaminobutanone dioxalate
Synonyms:
Citalopram Impurity G;
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77846 Citalopram hydrochloride EP impurity E
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77824 Citalopram related compound II
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77825 Citalopram related compound III
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77843 Citalopram related compound IV
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77833 Citalopram ring-opening impurity oxalate
Synonyms:
Citalopram alkene impurity oxalate;
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78710 Clarithromycin EP impurity A
Synonyms:
Clarithromycin F;
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78708 Clarithromycin EP Impurity B
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50404 Clemastine N-oxide
Synonyms:
Clemastine Fumarate Impurity A;
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77974 Clenbuterol impurity B
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77934 Clenbuterol impurity F
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79035 Clevidipine Impurity 1
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79029 Clevidipine impurity 10
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79030 Clevidipine impurity 11
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79031 Clevidipine impurity 12
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79032 Clevidipine Impurity 13
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79033 Clevidipine Impurity 14
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79034 Clevidipine Impurity 15
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79036 Clevidipine Impurity 2
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79038 Clevidipine impurity 4
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79039 Clevidipine impurity 5
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79040 Clevidipine impurity 6
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79026 Clevidipine Impurity 7
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79027 Clevidipine impurity 8
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79028 Clevidipine impurity 9
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79041 Clevidipine isomer
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57741 7-epi Clindamycin hydrochloride
1 mg $390   Add to Cart
5 mg $1,190   Add to Cart
78826 Clindamycin sulfone impurity
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78521 Clinofibrate impurity 1
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78522 Clinofibrate impurity 2
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78523 Clinofibrate impurity 3
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77866 Clobetasol propionate impurity E
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77868 Clobetasol Propionate Impurity F
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78075 Clofarabine related compound 1
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78076 Clofarabine related compound 2
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78970 Clofazimine related compound 1
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78971 Clofazimine related compound 2
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78969 Clofazimine related compound B
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78065 Clomipramine hydrochloride EP impurity C
Synonyms:
Clomipramine Related Compound C;
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D78508 Clomipramine hydrochloride EP impurity D
Synonyms:
Clomipramine Related Compound D; Dichloroimipramine;
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78511 Clomipramine hydrochloride EP impurity G
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78512 Clomipramine impurity 1
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78197 Clopidogrel 3-sulfonated impurity
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78198 Clopidogrel amide
Synonyms:
Clopidogrel Impurity 7;
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63770 Clopidogrel carboxylic acid (methyl (R)-o-chloromandelate) ester
Synonyms:
Clopidogrel Impurity D;
1 mg $390   Add to Cart
78172 Clopidogrel impurity B
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D78189 Clopidogrel impurity D sulfate
Synonyms:
Clopidogrel Carboxylic Acid [Methyl (R)-o-chloromandelate] Ester sulfate;
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78191 Clopidogrel impurity E
Synonyms:
Clopidogrel Sulfonated Impurity;
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78171 Clopidogrel N-methyl impurity I hydrochloride
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68840 Closantel dimer
Synonyms:
Closantel impurity J;
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78255 Closantel impurity A
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50410 para-Clotrimazole Isomer
Synonyms:
Clotrimazole Impurity B;
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78481 Cloxacillin sodium EP impurity A
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78482 Cloxacillin Sodium EP Impurity B
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78483 Cloxacillin sodium EP impurity E
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