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Keywords: 18162-48-6 , 872-50-4 , Methylene Chloride , naphthalene , THF , Titanium Dioxide

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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Clopamide Clopamide 636-54-4 C14H20ClN3O3S
1-Isobutyl-4-piperidone 1-Isobutyl-4-piperidone 72544-16-2 C9H17NO
Formoterol fumarate dihydrate Formoterol fumarate dihydrate 183814-30-4 C23H28N2O8
Chloramphenicol sodium succinate Chloramphenicol sodium succinate 982-57-0 C15H15Cl2N2O8.Na
Fluphenazine decanoate Fluphenazine decanoate 5002-47-1 C32H44F3N3O2S
GUANERAN GUANERAN 5581-52-2 C9H8N8O2S
BENZATHINE PENICILLINE G TETRAHYDRATE BENZATHINE PENICILLINE G TETRAHYDRATE 41372-02-5 C32H38N4O4S
DOTHIEPIN HCL DOTHIEPIN HCL 897-15-4 C19H22ClNS
4-(4-Chloro-benzyl)-2H-phthalazin-1-one 4-(4-Chloro-benzyl)-2H-phthalazin-1-one 53242-88-9 C15H11ClN2O
2,6-DIMETHYL-4-NITROSOPHENOL 2,6-DIMETHYL-4-NITROSOPHENOL 14818-35-0 C12H16O2
Milbemycin oxime Milbemycin oxime 129496-10-2 2C32H45NO7.2C31H43NO7
ALPRENOLOL HYDROCHLORIDE ALPRENOLOL HYDROCHLORIDE 13707-88-5 C15H24ClNO2
4-BUTYL-4-[HYDROXYMETHYL]-1,2-DIPHENYL-3,5-PYRAZOLIDINEDIONE HYDROGEN SUCCINATE [ESTER] 4-BUTYL-4-[HYDROXYMETHYL]-1,2-DIPHENYL-3,5-PYRAZOLIDINEDIONE HYDROGEN SUCCINATE [ESTER] 27470-51-5 C24H26N2O6
ENTEROKINASE ENTEROKINASE 9014-74-8 NULL
CHONDROITIN SULFATE B SODIUM SALT CHONDROITIN SULFATE B SODIUM SALT 54328-33-5 NULL
LEVULINIC ACID CALCIUM SALT DIHYDRATE LEVULINIC ACID CALCIUM SALT DIHYDRATE 5743-49-7 C10H18CaO8
alpha-Ethyl-2-oxo-1-pyrrolidineacetic acid alpha-Ethyl-2-oxo-1-pyrrolidineacetic acid 67118-31-4 C8H13NO3
Rilmenidine phosphate Rilmenidine phosphate 85409-38-7 C10H19N2O5P
Potassium trichloroammineplatinate (II) Potassium trichloroammineplatinate (II) 13820-91-2 Cl3H3KNPt
Piretanide Piretanide 55837-27-9 C17H18N2O5S
Disodium clodronate tetrahydrate Disodium clodronate tetrahydrate 88416-50-6 CH7Cl2NaO7P2
Framycetin sulphate Framycetin sulphate 4146-30-9 C23H48N6O17S
MOLGRASTIM MOLGRASTIM 99283-10-0
2-(4-Methoxybenzylamino)pyridine 2-(4-Methoxybenzylamino)pyridine 52818-63-0 C13H14N2O
3-METHOXY-DL-TYROSINE 3-METHOXY-DL-TYROSINE 7636-26-2 C10H13NO4
4-(DIPHENYLMETHOXY)PIPERIDINE 4-(DIPHENYLMETHOXY)PIPERIDINE 58258-01-8 C18H21NO
N,N'-Dipropylurea N,N'-Dipropylurea 623-95-0 C7H16N2O
ISOPRENALINE SULFATE ISOPRENALINE SULFATE 6700-39-6 2C11H17NO3.2H2O.H2O4S
Spectinomycin sulfate tetrahydrate Spectinomycin sulfate tetrahydrate 64058-48-6 C14H26N2O11S
ACETYLSALICYLSALICYLIC ACID ACETYLSALICYLSALICYLIC ACID 530-75-6 C16H12O6
DIHYDROERGOCRISTINE MESYLATE DIHYDROERGOCRISTINE MESYLATE 24730-10-7 C36H45N5O8S
1-Cyanocyclohexaneacetic acid 1-Cyanocyclohexaneacetic acid 133481-09-1 C9H13NO2
2,4-DIAMINO-6-DIMETHYLAMINO-1,3,5-TRIAZINE 2,4-DIAMINO-6-DIMETHYLAMINO-1,3,5-TRIAZINE 1985-46-2 C5H10N6
CAPTOPRIL DISULFIDE CAPTOPRIL DISULFIDE 64806-05-9 C18H28N2O6S2
Salmeterol Related Compound B (10 mg) (4-{1-Hydroxy-2-[6-(4-phenylbutan-2-yloxy)hexylamino]ethyl}-2-(hydroxymethyl)phenol) Salmeterol Related Compound B (10 mg) (4-{1-Hydroxy-2-[6-(4-phenylbutan-2-yloxy)hexylamino]ethyl}-2-(hydroxymethyl)phenol) 108928-81-0 C25H37NO4
alpha-(Dimethylaminomethyl)-alpha-ethylbenzyl alcohol hydrochloride alpha-(Dimethylaminomethyl)-alpha-ethylbenzyl alcohol hydrochloride 104743-23-9 C12H20ClNO
N-[6,9-Dihydro-6-oxo-9-[[2-(1-oxopropoxy)-1-[(1-oxopropoxy)methyl]ethoxy]methyl]-1H-purin-2-yl]propanamide N-[6,9-Dihydro-6-oxo-9-[[2-(1-oxopropoxy)-1-[(1-oxopropoxy)methyl]ethoxy]methyl]-1H-purin-2-yl]propanamide 177216-32-9 C18H25N5O7
5-Bromo-1-(4-fluorophenyl)-1,3-dihydro-N,N-dimethyl-1-isobenzofuranpropanamine ethanedioate (1:1) 5-Bromo-1-(4-fluorophenyl)-1,3-dihydro-N,N-dimethyl-1-isobenzofuranpropanamine ethanedioate (1:1) 64372-43-6 C21H23BrFNO5
(E)-2-Methyl-4-(4-(2-Methyl-5,10-dihydro-4H-benzo[b]thieno[2,3-e][1,4]diazepin-4-yl)piperazin-1-yl)-10H-benzo[b]thieno[2,3-e][1,4]diazepine (E)-2-Methyl-4-(4-(2-Methyl-5,10-dihydro-4H-benzo[b]thieno[2,3-e][1,4]diazepin-4-yl)piperazin-1-yl)-10H-benzo[b]thieno[2,3-e][1,4]diazepine 1070876-09-3 C28H26N6S2
(1S,2S,3R,5S)-PinanediolN-BOC-L-phenylalanine-L-leucine boronate (1S,2S,3R,5S)-PinanediolN-BOC-L-phenylalanine-L-leucine boronate 1187479-72-6 C29H45BN2O5
Posaconazole iMpurity 7 Posaconazole iMpurity 7 2180759-84-4 C37H42F2N8O4
Intedanib Impurity Intedanib Impurity 2243396-74-7 C31H32N6O6
2-BENZYL-1,2,3,6,7,11B-HEXAHYDRO-4H-PYRAZION[2,1-A] ISOQUINOLINE-4-ONE 2-BENZYL-1,2,3,6,7,11B-HEXAHYDRO-4H-PYRAZION[2,1-A] ISOQUINOLINE-4-ONE 54761-87-4 C19H18N2O2
OXELADIN CITRATE OXELADIN CITRATE 52432-72-1 C26H41NO10
3,4-Dihydro-7-(4-chlorobutoxy)-2(1H)-quinolinone 3,4-Dihydro-7-(4-chlorobutoxy)-2(1H)-quinolinone 120004-79-7 C13H16ClNO2
Sugammadex sodium Impurity 46 Sugammadex sodium Impurity 46
Tenofovir Impurity 103 Tenofovir Impurity 103
Cabozantinib impurity 44 Cabozantinib impurity 44
Cabozantinib impurity 40 Cabozantinib impurity 40
Cabozantinib impurity 74 Cabozantinib impurity 74
5-hydroxy-N,1,2-trimethyl-1H-indole-3-carboxamide 5-hydroxy-N,1,2-trimethyl-1H-indole-3-carboxamide
Doxofylline Impurity 25 Doxofylline Impurity 25
Dapoxetine impurity 62 Dapoxetine impurity 62
Dapoxetine impurity 56 Dapoxetine impurity 56
CHLORHEXIDENE DIACETATE IMPURITY A CHLORHEXIDENE DIACETATE IMPURITY A 152504-08-0 C16H24ClN9
AZITHROMYCIN IMPURITY A AZITHROMYCIN IMPURITY A
Oseltamivir Impurity 94 Oseltamivir Impurity 94
Oseltamivir Impurity 82 Oseltamivir Impurity 82
Oseltamivir Impurity 74 Oseltamivir Impurity 74
Uridine, 5'-(2-methylpropanoate) (9CI) Uridine, 5'-(2-methylpropanoate) (9CI) 886538-48-3 C13H18N2O7
Dapagliflozin Impurity 47 Dapagliflozin Impurity 47
Crisaborole Impurity 17 Crisaborole Impurity 17
Crisaborole Impurity 19 Crisaborole Impurity 19
1,5-Pentanedione, 1-(2-fluorophenyl)-5-[(4S)-2-oxo-4-phenyl-3-oxazolidinyl]- 1,5-Pentanedione, 1-(2-fluorophenyl)-5-[(4S)-2-oxo-4-phenyl-3-oxazolidinyl]- 2514695-40-8 C20H18FNO4
4-ethoxy-3-(4-pyridyl)-3-buten-2-one 4-ethoxy-3-(4-pyridyl)-3-buten-2-one 88349-61-5 C11H13NO2
1,3-dihydro-4-methyl-2H-1,5-benzodiazepin-2-one 1,3-dihydro-4-methyl-2H-1,5-benzodiazepin-2-one 6276-48-8 C10H10N2O
(E)-2-methoxy-4-(prop-1-enyl)phenol (E)-2-methoxy-4-(prop-1-enyl)phenol 5932-68-3 C10H12O2
Phosphonic acid, [[2-(6-amino-9H-purin-9-yl)propoxy]methyl]- (9CI) Phosphonic acid, [[2-(6-amino-9H-purin-9-yl)propoxy]methyl]- (9CI) 107021-20-5 C9H14N5O4P
Sitagliptin EP Impurity 7 Sitagliptin EP Impurity 7
Sitagliptin EP Impurity H Sitagliptin EP Impurity H
7-Benzofurancarboxamide, 4-amino-5-chloro-2,3-dihydro-3-hydroxy-N-[1-(3-methoxypropyl)-4-piperidinyl]- 7-Benzofurancarboxamide, 4-amino-5-chloro-2,3-dihydro-3-hydroxy-N-[1-(3-methoxypropyl)-4-piperidinyl]- 2636673-48-6 C18H26ClN3O4
Beprostatin impurity 4 Beprostatin impurity 4
cis-5-chloro-2,3,3a,12b-tetrahydro-2-methyl-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole cis-5-chloro-2,3,3a,12b-tetrahydro-2-methyl-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole 65621-78-5 C17H16ClNO
methyl tosylcarbamate methyl tosylcarbamate 14437-03-7 C9H11NO4S
(1R,2R,4S,5S,7s,9r)-9-butyl-9-methyl-7-((2-phenylacryloyl)oxy)-3-oxa-9-azatricyclo[3.3.1.02,4]nonan-9-ium (1R,2R,4S,5S,7s,9r)-9-butyl-9-methyl-7-((2-phenylacryloyl)oxy)-3-oxa-9-azatricyclo[3.3.1.02,4]nonan-9-ium 786598-71-8 C21H28NO3+
(+)-2-Ethoxy-4-(N-3-Methyl-1(S)-(2-(1-Piperidinyl)Phenyl)-Butyl)Carbamoylmethyl) (+)-2-Ethoxy-4-(N-3-Methyl-1(S)-(2-(1-Piperidinyl)Phenyl)-Butyl)Carbamoylmethyl) 147770-06-7 C29H40N2O4
4-Chloro-2-(chloromethyl)-3-Methyl Pyridine Hydrochloride 4-Chloro-2-(chloromethyl)-3-Methyl Pyridine Hydrochloride 152402-97-6 C7H8Cl3N
4-(3-CYANO-2-METHYLPROPIONYL)ACETAMILIDE 4-(3-CYANO-2-METHYLPROPIONYL)ACETAMILIDE 42075-21-8
Erythromycin, 6-O-Methyl-2',4'-Bis-O-(Trimethylsilyl)-, 9-[O-(1-Methoxy-1-Methylethyl)Oxime] Erythromycin, 6-O-Methyl-2',4'-Bis-O-(Trimethylsilyl)-, 9-[O-(1-Methoxy-1-Methylethyl)Oxime] 119699-81-9 C48H94N2O14Si2
(R)-8-(3-aminopiperidin-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-7-(3-oxobutyl)-3,7-dihydro-1H-purine-2,6-dione (R)-8-(3-aminopiperidin-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-7-(3-oxobutyl)-3,7-dihydro-1H-purine-2,6-dione
Isavuconazole Impurity 37 Isavuconazole Impurity 37
"mixture of 2-amino-9-[[2-(hydroxymethoxy) ethoxy]methyl]-1,9-dihydro-6H-purin-6-one and 2-amino-9-[[2-(hydroxyethoxy)methoxy]methyl]-1,9- dihydro-6H-purin-6-one,"
N-((R)-1-(((R)-3-methyl-1-((3aS,4S,6S,7aR)-3a,5,5-trimethylhexahydro-4,6-methanobenzo[d][1,3,2]dioxaborol-2-yl)butyl)amino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide N-((R)-1-(((R)-3-methyl-1-((3aS,4S,6S,7aR)-3a,5,5-trimethylhexahydro-4,6-methanobenzo[d][1,3,2]dioxaborol-2-yl)butyl)amino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide 1375004-39-9 C29H39BN4O4
(S)-1-(2-(((1r,3R,5S,7S)-3,5-dihydroxyadamantan-1-yl)amino)acetyl)pyrrolidine-2-carbonitrile (S)-1-(2-(((1r,3R,5S,7S)-3,5-dihydroxyadamantan-1-yl)amino)acetyl)pyrrolidine-2-carbonitrile
Mannitol EP impurity B Mannitol EP impurity B
Mannitol EP impurity A Mannitol EP impurity A
Peramivir Amino Carboxylic Isomerism Impurity Peramivir Amino Carboxylic Isomerism Impurity
Peramivir Chlorinated Impurity Peramivir Chlorinated Impurity
Brivaracetam Impurity 999 Brivaracetam Impurity 999
Dasatinib impurity 48 Dasatinib impurity 48
Pemetrexed Impurity 120 Pemetrexed Impurity 120
Ticagrelor Impurity 101 Ticagrelor Impurity 101
4-tosyl-1,4,8,11-tetraazabicyclo[9.3.1]pentadecane 4-tosyl-1,4,8,11-tetraazabicyclo[9.3.1]pentadecane
1-(3-((2,4-dimethylphenyl)thio)phenyl)piperazine hydrochloride 1-(3-((2,4-dimethylphenyl)thio)phenyl)piperazine hydrochloride 2137793-92-9
Apixaban impurity 66S Apixaban impurity 66S
Aatrombopag Impurity 17 Aatrombopag Impurity 17 1268118-96-2 C7H4BrClN2S2
(R)-(-)-2-AMINOBUTANAMIDE HYDROCHLORIDE, 97% (R)-(-)-2-AMINOBUTANAMIDE HYDROCHLORIDE, 97% 103765-03-3 C4H11ClN2O
Flomoxef Impurity 20 Sodium Salt Flomoxef Impurity 20 Sodium Salt 2095697-77-9 C15H18F2N6O7S2
((2R,3S,4R)-3,4,5-trihydroxytetrahydrofuran-2-yl)methyl isobutyrate ((2R,3S,4R)-3,4,5-trihydroxytetrahydrofuran-2-yl)methyl isobutyrate 2591381-21-2 C9H16O6
3-Thiophenecarboxylic acid, 4-(bromomethyl)-2-[[(2,6-difluorophenyl)methyl](propoxycarbonyl)amino]-5-(4-nitrophenyl)-, ethyl ester 3-Thiophenecarboxylic acid, 4-(bromomethyl)-2-[[(2,6-difluorophenyl)methyl](propoxycarbonyl)amino]-5-(4-nitrophenyl)-, ethyl ester 2591260-07-8 C25H23BrF2N2O6S
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