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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
1-(p-Toluenesulfonyl)hoMopiperazine, 95% 1-(p-Toluenesulfonyl)hoMopiperazine, 95% 872103-28-1 C12H18N2O2S
1-NaphthaleneethanaMine, 1,2,3,4-tetrahydro-7-Methoxy- 1-NaphthaleneethanaMine, 1,2,3,4-tetrahydro-7-Methoxy- 59081-66-2 C13H19NO
1H-Indazole, 4,5-dichloro- 1H-Indazole, 4,5-dichloro- 1020243-02-0 C7H4Cl2N2
1,4-ditosyl-1,4-diazepane 1,4-ditosyl-1,4-diazepane 5769-35-7 C19H24N2O4S2
Flurbiprofen Impurity Flurbiprofen Impurity 64858-90-8 C17H17FO2
IMp. A (EP) as DisodiuM Salt: (4S)-2-[Carboxy[[[3-(2-chloro-6-fluorophenyl)-5-Methylisoxazol-4-yl]carbonyl]aMino]Methyl]-5,5-diMethylthiazolidine-4-carboxylic Acid DisodiuM Salt(Penicilloic Acids of Flucloxacillin DisodiuM Salt) IMp. A (EP) as DisodiuM Salt: (4S)-2-[Carboxy[[[3-(2-chloro-6-fluorophenyl)-5-Methylisoxazol-4-yl]carbonyl]aMino]Methyl]-5,5-diMethylthiazolidine-4-carboxylic Acid DisodiuM Salt(Penicilloic Acids of Flucloxacillin DisodiuM Salt)
the Metabolite of Ivabradine the Metabolite of Ivabradine 215935-23-2 C26H34N2O5
Acarbose 1,1-α,α-Glycoside IMpurity Acarbose 1,1-α,α-Glycoside IMpurity 610271-07-3 C25H43NO18
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
monocalcium mono((3R,5S,E)-7-(4-(3-fluorophenyl)-6-isopropyl-2- (N-methylmethylsulfonamido)pyrimidin-5-yl)-3,5-dihydroxyhept-6- enoate) monocalcium mono((3R,5S,E)-7-(4-(3-fluorophenyl)-6-isopropyl-2- (N-methylmethylsulfonamido)pyrimidin-5-yl)-3,5-dihydroxyhept-6- enoate)
Cefradine Impurity J Cefradine Impurity J
Peramivir diacetyl impurity 1 Peramivir diacetyl impurity 1
Urapidil Impurity 17 Urapidil Impurity 17
Clindamycin Impurity 86 Clindamycin Impurity 86
Canagliflozin Impurity 77 Canagliflozin Impurity 77
Carbazochrome Sodium Sulfonate Impurity I Carbazochrome Sodium Sulfonate Impurity I
NA NA
NA NA
Cetrorelix Impurity 18 Cetrorelix Impurity 18
Cetrorelix Impurity 13 Cetrorelix Impurity 13
NA NA
Cetrorelix Impurity 2 (+L-Ser) Cetrorelix Impurity 2 (+L-Ser)
Peramivir Intermediate Impurity 39 Peramivir Intermediate Impurity 39
Peramivir Intermediate Impurity 59 Peramivir Intermediate Impurity 59
Criborole impurity 999 Criborole impurity 999
Atracurium impurity O drops Atracurium impurity O drops
NA NA
Bimatoprost Impurity 2 Bimatoprost Impurity 2
Guanosine Guanosine 30747-23-0 C18H21N5O9
Minoxidil Impurity G Minoxidil Impurity G
Brivaracet amoxidation Impurity 2 Brivaracet amoxidation Impurity 2
Sugammadex Impurity U Sugammadex Impurity U
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
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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