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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Des-6-[4-(2-hydroxyethyl)-1-piperazinyl]-6-chloro Dasatinib Des-6-[4-(2-hydroxyethyl)-1-piperazinyl]-6-chloro Dasatinib 910297-71-1 C16H13Cl2N5O2S
Hydroxythiovardenafil Hydroxythiovardenafil 912576-30-8 C23H32N6O4S2
(((((1-(6-aMino-9H-purin-9-yl)propan-2-yl)oxy)Methyl)phosphoryl)bis(oxy))bis(Methylene) isopropyl Methyl dicarbonate (((((1-(6-aMino-9H-purin-9-yl)propan-2-yl)oxy)Methyl)phosphoryl)bis(oxy))bis(Methylene) isopropyl Methyl dicarbonate 1246812-43-0 C17H26N5O10P
9(10H)-Acridinone, 6-aMino-2-ethoxy- 9(10H)-Acridinone, 6-aMino-2-ethoxy- 144335-20-6 C15H14N2O2
parecoxib impurity L parecoxib impurity L
Rupatadine iMpurity Rupatadine iMpurity 169253-15-0 C19H19ClN2
ceftazidiMe iMpurity C ceftazidiMe iMpurity C
pidotiMod iMpurity E pidotiMod iMpurity E 162148-16-5 C9H12N2O4S
1H-Pyrazole-1-propanenitrile, β-cyclopentyl-4-[7-(hydroxyMethyl)-7H-pyrrolo[2,3-d]pyriMidin-4-yl]-,(βR)- 1H-Pyrazole-1-propanenitrile, β-cyclopentyl-4-[7-(hydroxyMethyl)-7H-pyrrolo[2,3-d]pyriMidin-4-yl]-,(βR)- 1236033-03-6 C18H20N6O
Cyclopropanecarboxylic acid, 1-[(phenylaMino)carbonyl]- Cyclopropanecarboxylic acid, 1-[(phenylaMino)carbonyl]- 145591-80-6 C11H11NO3
3-PiperidinaMine, 1-acetyl-N,4-diMethyl-N-1H-pyrrolo[2,3-d]pyriMidin-4-yl-, (3R,4R)- (9CI) 3-PiperidinaMine, 1-acetyl-N,4-diMethyl-N-1H-pyrrolo[2,3-d]pyriMidin-4-yl-, (3R,4R)- (9CI) 477600-76-3 C15H21N5O
AzithroMycin iMpurity AzithroMycin iMpurity 194809-66-0 C37H69BN2O13
MeropeneM iMpurity MeropeneM iMpurity 96035-23-3 C15H19N3O5S
Ciprofloxacin EP IMpurity B Ciprofloxacin EP IMpurity B 93107-11-0 C17H19N3O3
Valdecoxib IMpurity-E Valdecoxib IMpurity-E 1373038-63-1 C16H11Cl2NO5S2
Sunitinib N-Oxide Sunitinib N-Oxide 356068-99-0 C22H27FN4O3
Abiraterone Sulfate Abiraterone Sulfate
AtracuriuM IMpurity G (R-Laudanosine) AtracuriuM IMpurity G (R-Laudanosine)
BendaMustine IMpurity D BendaMustine N-Alkylated IMpurity BendaMustine IMpurity D BendaMustine N-Alkylated IMpurity
Cefradine IMpurity E Cefradine IMpurity E
Cetirizine IMpurity-7 Cetirizine IMpurity-7 C21H25ClN2O3
Dasatinib IMpurity 6 Dasatinib IMpurity 6
Desacetyl CefathiaMidine Desacetyl CefathiaMidine 958001-61-1 C17H26N4O5S2
Fluconazole IMpurity D Fluconazole IMpurity D C13H12F2N6O
Lercanidipine IMpurity A Lercanidipine IMpurity A 74936-74-6 C19H22N2O6
Loratadine 2-Chloro IMpurity Loratadine 2-Chloro IMpurity 165739-64-0 C22H22Cl2N2O2
Metoprolol IMpurity F Metoprolol IMpurity F C15H25NO3
Miconazole IMpurity I Miconazole IMpurity I 47363-37-1 C18H15Cl3N2O
Milrinone IMpurity 1 Milrinone IMpurity 1
Nicardipine Related CoMpound 2 Nicardipine Related CoMpound 2 64603-72-1 C16H14N2O6
Saxagliptin IMpurity 1 Saxagliptin IMpurity 1 1564266-73-4 C6H10N2O
Sitagliptin DeaMino IMpurity 1 Sitagliptin DeaMino IMpurity 1 1253056-18-6 C16H12F6N4O
Sitagliptin Defuoro IMpurity 5 Sitagliptin Defuoro IMpurity 5 486460-31-5 C16H16F5N5O
TiMolol IMpurity E TiMolol IMpurity E 1026075-53-5 C17H26N4O6S
EthanediaMide iMpurity J EthanediaMide iMpurity J C2H4N2O2
4,6-dichloro-2-(propylthio)pyriMidine 4,6-dichloro-2-(propylthio)pyriMidine 1401318-10-2 C7H8Cl2N2S
Istradefylline impurity B Istradefylline impurity B
Ticagrelor diastereoMer Ticagrelor diastereoMer 1459719-81-3 C9H9F2N
Mirabegron iMpurity Mirabegron iMpurity 1581285-26-8 C16H21ClN2
Sunitinib iMpurity Sunitinib iMpurity 356068-98-9 C12H19N3O2
(-)-DihydroapovincaMinic Acid Ethyl Ester (-)-DihydroapovincaMinic Acid Ethyl Ester 57327-92-1 C22H28N2O2
(α1S,α4S,2S,5S)-2,5-DiMethyl-3,6-dioxo-α1,α4-bis(2-phenylethyl)-1,4-piperazinediacetic Acid 1,4-Diethyl Ester (α1S,α4S,2S,5S)-2,5-DiMethyl-3,6-dioxo-α1,α4-bis(2-phenylethyl)-1,4-piperazinediacetic Acid 1,4-Diethyl Ester 151387-05-2 C30H38N2O6
[2-(4-Fluorophenyl)cyclopropyl]aMine hydrochloride [2-(4-Fluorophenyl)cyclopropyl]aMine hydrochloride 879324-66-0 C9H11ClFN
[4-(4-AMino-7-hydroxy-6-Methoxy-2-quinazolinyl)-1-piperazinyl](tetrahydro-2-furanyl)Methanone [4-(4-AMino-7-hydroxy-6-Methoxy-2-quinazolinyl)-1-piperazinyl](tetrahydro-2-furanyl)Methanone 105356-90-9 C18H23N5O4
2-(DiethylaMino)-N-(2,5-diMethylphenyl)acetaMide Hydrochloride 2-(DiethylaMino)-N-(2,5-diMethylphenyl)acetaMide Hydrochloride 1012864-23-1 C14H23ClN2O
2-Keto-D-gulonic Acid Methyl Ester 2-Keto-D-gulonic Acid Methyl Ester 67776-07-2 C7H12O7
9,11-Dehydro-17α-cyanoMethyl Estradiol 9,11-Dehydro-17α-cyanoMethyl Estradiol 86153-38-0 C20H23NO2
DeMethyl Irbesartan DeMethyl Irbesartan 158778-58-6 C24H26N6O
Epiprednisolone Epiprednisolone 600-90-8 C21H28O5
δ-2-CefodiziMe (2 :1 Mixture) δ-2-CefodiziMe (2 :1 Mixture) 120533-30-4 C20H20N6O7S4
Salbutamol Acetonide Salbutamol Acetonide 54208-72-9 C16H25NO3
8-Chloro-1-methyl-6-phenyl-4H-Imidazo[1,5-a][1,4]benzodiazepine 8-Chloro-1-methyl-6-phenyl-4H-Imidazo[1,5-a][1,4]benzodiazepine 59467-86-6 C18H14ClN3
BenzeneMethanaMine, 4-ethoxy-3-Methoxy-a-[(Methylsulfonyl)Methyl]- BenzeneMethanaMine, 4-ethoxy-3-Methoxy-a-[(Methylsulfonyl)Methyl]- 885268-06-4 C12H19NO4S
Afatinib IMpurity C Afatinib IMpurity C
Nsc249004 Nsc249004 7428-39-9 C9H13N3O5
(3S,5R,6E)-7-[2-Cyclopropyl-4-(4-fluorophenyl)-3-quinolinyl]-3,5-dihydroxy-6-heptenoic acid (3S,5R,6E)-7-[2-Cyclopropyl-4-(4-fluorophenyl)-3-quinolinyl]-3,5-dihydroxy-6-heptenoic acid 254452-86-3 C25H24FNO4
(E)-4-Acetoxy Tamoxifen (E)-4-Acetoxy Tamoxifen 76117-70-9 C28H31NO3
Atorvastatin Cyclic Isopropyl Impurity Atorvastatin Cyclic Isopropyl Impurity 873950-17-5 C33H35FN2O7
O-Acetyl Losartan O-Acetyl Losartan 1006062-27-6 C24H25ClN6O2
(2-Chloro-5-iodophenyl)(4-ethoxyphenyl)methanone (2-Chloro-5-iodophenyl)(4-ethoxyphenyl)methanone 1103738-26-6 C15H12ClIO2
3-Dechloro-4-chloro Lamotrigine 3-Dechloro-4-chloro Lamotrigine 38943-76-9 C9H7Cl2N5
D-2’-Deoxyribofuranosyl-3-guanylurea (α/β-Mixture) D-2’-Deoxyribofuranosyl-3-guanylurea (α/β-Mixture) 570410-72-9 C7H14N4O4
Exemestane Impurity A Exemestane Impurity A
(1R,3S)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester (1R,3S)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester 629652-44-4 C22H19ClN2O5
3-DesMorpholinyl-3-hydroxyethylaMino Gefitinib 3-DesMorpholinyl-3-hydroxyethylaMino Gefitinib 847949-56-8 C20H22ClFN4O3
4-Deschloro-4-(2-furanylMethyl)aMino FuroseMide 4-Deschloro-4-(2-furanylMethyl)aMino FuroseMide 5046-19-5 C17H17N3O6S
Cephalexin Sulfoxide Cephalexin Sulfoxide 56193-21-6 C16H17N3O5S
N-Butyl Nor ScopolaMine Hydrochloride N-Butyl Nor ScopolaMine Hydrochloride 22235-98-9 C20H28ClNO4
11β-Hydroxy Dienogest 11β-Hydroxy Dienogest 86153-39-1 C20H25NO3
2H,5H-Pyrano[4,3-b]pyranyl Mupirocin SodiuM IMpurity 2H,5H-Pyrano[4,3-b]pyranyl Mupirocin SodiuM IMpurity 116182-44-6 C26H43NaO9
3-Hydroxy CitalopraM 3-Hydroxy CitalopraM 411221-53-9 C20H21FN2O2
5-(OxiranylMethoxy)-2,3,4,9-tetrahydrocarbazole 5-(OxiranylMethoxy)-2,3,4,9-tetrahydrocarbazole 58457-32-2 C15H17NO2
6α-Methyl Hydrocortisone 21-HeMisuccinate 6α-Methyl Hydrocortisone 21-HeMisuccinate 119657-85-1 C26H36O8
Hydroxy TorseMide Hydroxy TorseMide 99300-68-2 C16H20N4O4S
Hydroxy Varenicline N-Trifluoroacetate Hydroxy Varenicline N-Trifluoroacetate 357426-10-9 C15H12F3N3O2
N2-Methyl Alfuzosin Hydrochloride N2-Methyl Alfuzosin Hydrochloride 72104-34-8 C19H28ClN5O4
N2-Methyl Alfuzosin Hydrochloride N2-Methyl Alfuzosin Hydrochloride 72104-34-8 C19H28ClN5O4
N-ForMyl Valacyclovir N-ForMyl Valacyclovir 847670-62-6 C14H20N6O5
2-Fluorobiphenyl-4-carboxylic Acid 2-Fluorobiphenyl-4-carboxylic Acid 137045-30-8 C13H9FO2
Theophyllidine Hydrochloride Theophyllidine Hydrochloride 116131-08-9 C6H10ClN4O
1,4'-Dimethyl-2'-propyl-2,5'-bi-1H-benzimidazole 1,4'-Dimethyl-2'-propyl-2,5'-bi-1H-benzimidazole 887583-89-3 C19H20N4
Tetracyclics compound impurities Tetracyclics compound impurities
Urapidil Impurity Urapidil Impurity 770-42-3 C8H9BrFN.BrH
N'-(1-Methylazepan-4-yl)benzohydrazine N'-(1-Methylazepan-4-yl)benzohydrazine 117078-69-0 C14H22ClN3O
Afatinib IMpurity C Afatinib IMpurity C
AMisulpride IMpurity AMisulpride IMpurity 84859-26-7 C8H17NO2
Avanafil iMpurity 5 Avanafil iMpurity 5
Cefoxitin iMpurity E (R-Methoxy cefoxitin) Cefoxitin iMpurity E (R-Methoxy cefoxitin)
Desloratadine IMpurity 3 Desloratadine IMpurity 3 1346600-61-0 C19H19ClN2
DibroMo IMpurity DibroMo IMpurity 1352492-08-0 C15H12Br2O2
ErtapeneM IMpurity DIPP ErtapeneM IMpurity DIPP 220031-86-7 C18H27N2O6PS
Gefitinib IMpurity 1 Gefitinib IMpurity 1 1561173-24-7 C15H22ClN3O3
Pitavastatin Defuoro IMpurity CalciuM Salt Pitavastatin Defuoro IMpurity CalciuM Salt 1258947-30-6 C50H50CaN2O8
Solifenacin Related CoMpound 4 Succinate Solifenacin Related CoMpound 4 Succinate 862207-71-4 C27H32N2O6
TenoxicaM IMpurity E (2-Methylthieno[2,3-d]isothiazol-3(2H)-one-1,1-dioxide ) TenoxicaM IMpurity E (2-Methylthieno[2,3-d]isothiazol-3(2H)-one-1,1-dioxide ) 94040-09-2 C6H5NO3S2
(+)-(14β)-Dihydrovinpocetine (+)-(14β)-Dihydrovinpocetine 57517-54-1 C22H28N2O2
D,L-Venlafaxine-d10 Hydrochloride D,L-Venlafaxine-d10 Hydrochloride 1216539-56-8 C17H28ClNO2
Ceritinib IMpurity Ceritinib IMpurity
Melphalan IMpurity Melphalan IMpurity
1-[2-[(5-chloro-2,4-diMethylphenyl)thio]phenyl]- Piperazine 1-[2-[(5-chloro-2,4-diMethylphenyl)thio]phenyl]- Piperazine 1240670-87-4 C18H21ClN2S
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