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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
Bumetanide Impurity 22 Bumetanide Impurity 22
Rocuronium Bromide Impurity 32 、33 Rocuronium Bromide Impurity 32 、33
Flucloxacillin Sodium Impurity X Flucloxacillin Sodium Impurity X
Pitavastatin Impurity 98 Pitavastatin Impurity 98
Perospirone Impurity 29 Perospirone Impurity 29
Perospirone Impurity 24 Perospirone Impurity 24
Perospirone Impurity 7 Perospirone Impurity 7 1002359-81-0
2-methyl-4-(((2E,6E,10E)-3,7,11,15-tetramethylhexadeca-2,6,10,14- tetraen-1-yl)oxy)naphthalen-1-yl acetate 2-methyl-4-(((2E,6E,10E)-3,7,11,15-tetramethylhexadeca-2,6,10,14- tetraen-1-yl)oxy)naphthalen-1-yl acetate
Paxlovid Impurity 17 Paxlovid Impurity 17
NA NA
Fondaparinux sodium impurity 16 Fondaparinux sodium impurity 16
Fondaparinux Sodium Impurity 11 Fondaparinux Sodium Impurity 11
Oxacillin Impurity E Oxacillin Impurity E
AZOBENZENE-3-CARBOXYLICACID AZOBENZENE-3-CARBOXYLICACID 14474-22-7 C13H10N2O2
Bosutinib Impurity 40 Bosutinib Impurity 40
Ticagrelor Impurity J&K Ticagrelor Impurity J&K
Olodaterol Impurity 24 Olodaterol Impurity 24
Miglitol Isomer ImpurityB Miglitol Isomer ImpurityB
Chloromethyl ethyl carbonate Chloromethyl ethyl carbonate 35179-98-7 C4H7ClO3
Bimatoprost Impurity 10 Bimatoprost Impurity 10
Carbetocin S-Oxide II Carbetocin S-Oxide II
Empagliflozin Impurity 82 Empagliflozin Impurity 82 2452301-16-3 C17H16ClIO2
Empagliflozin Impurity 88 Empagliflozin Impurity 88
Tofacitinib Impurity K Tofacitinib Impurity K 2328165-36-0 C16H21N5O3
Olopatadine Impurity 13 Olopatadine Impurity 13 55453-90-2 C18H16O4
Avibactam sodium Impurity CIA Avibactam sodium Impurity CIA
4-((2-amino-2-oxoethyl)amino)butanoic acid 4-((2-amino-2-oxoethyl)amino)butanoic acid 1096803-44-9 C6H12N2O3
Lenvatinib impurity LFZZ-17 Lenvatinib impurity LFZZ-17 C11H9NO4
Ornidazole Impurity 25 Ornidazole Impurity 25
Pitavastatin Impurity 72 Pitavastatin Impurity 72
Febuxostat Impurity 109 Febuxostat Impurity 109
Brivaracetam Impurity 37 Brivaracetam Impurity 37
Ticagrelor Impurity 133 Ticagrelor Impurity 133
4-[(1,3-Dihydro-1-hydroxy-2,1-benzoxaborol-5-yl)oxy]-benzamide 4-[(1,3-Dihydro-1-hydroxy-2,1-benzoxaborol-5-yl)oxy]-benzamide 1187188-59-5 C14H12BNO4
2-Propenoic acid, 3-[4-(hydroxymethyl)phenyl]- 2-Propenoic acid, 3-[4-(hydroxymethyl)phenyl]- 219915-41-0 C10H10O3
L-Alanine, 3-[(R)-(carboxymethyl)sulfinyl]- L-Alanine, 3-[(R)-(carboxymethyl)sulfinyl]- 61475-35-2 C5H9NO5S
Phenol, 2-(2-phenyldiazenyl)- Phenol, 2-(2-phenyldiazenyl)- 2362-57-4 C12H10N2O
3-Quinolinecarboxylic acid, 1-cyclopropyl-7-fluoro-1,4-dihydro-6,8-dimethoxy-4-oxo- 3-Quinolinecarboxylic acid, 1-cyclopropyl-7-fluoro-1,4-dihydro-6,8-dimethoxy-4-oxo- 2410658-30-7 C15H14FNO5
Hexanoic acid, 3-(hydroxymethyl)- Hexanoic acid, 3-(hydroxymethyl)- 81381-87-5 C7H14O3
benzhydryl (6R,7S)-7-(2-mercaptoacetamido)-7-methoxy-3-(((1-methyl-1H-tetrazol-5-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate benzhydryl (6R,7S)-7-(2-mercaptoacetamido)-7-methoxy-3-(((1-methyl-1H-tetrazol-5-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
43,50-Dicarboxy-cyanoco balamin 43,50-Dicarboxy-cyanoco balamin
(1R,4S) Sertraline Hydrochloride (1R,4S) Sertraline Hydrochloride 79896-32-5 C17H18Cl3N
4-Desmethoxy-4-chloro Omeprazole Sulfide 4-Desmethoxy-4-chloro Omeprazole Sulfide 220757-74-4 C16H16ClN3OS
N-Desmethyl Tamoxifen Hydrochloride N-Desmethyl Tamoxifen Hydrochloride 15917-65-4 C25H27NO.ClH
(3S,5S)-Atorvastatin sodium salt (3S,5S)-Atorvastatin sodium salt 501121-34-2 C33H35FN2O5
2(1H)-Pyrazinone, 3-phenyl- 2(1H)-Pyrazinone, 3-phenyl- 2882-18-0 C10H8N2O
1H-Thieno[3,4-d]imidazole-4-valeric acid, hexahydro-2-oxo-, stereoisomer (8CI) 1H-Thieno[3,4-d]imidazole-4-valeric acid, hexahydro-2-oxo-, stereoisomer (8CI) 21788-37-4 C10H16N2O3S
pazufloxacin pazufloxacin 166665-94-7 C16H15FN2O4
MK 485 MK 485 28875-92-5 C10H14N2O4
1,3-Dioxane-4-aceticacid,6-(cyanomethyl)-2,2-dimethyl-,(4R,6R)-(9CI) 1,3-Dioxane-4-aceticacid,6-(cyanomethyl)-2,2-dimethyl-,(4R,6R)-(9CI) 807312-27-2 C10H15NO4
bromobenzarone bromobenzarone 94729-09-6 C17H13BrO3
digoxigenin-bis(digitoxoside) digoxigenin-bis(digitoxoside) 5297-05-2 C35H54O11
17 alpha-cyanomethyl-19-nortestosterone 17 alpha-cyanomethyl-19-nortestosterone 67473-36-3 C20H27NO2
desmethylazelastine desmethylazelastine 47491-38-3 C21H22ClN3O
(-)-menthyl benzoate (-)-menthyl benzoate 6284-35-1 C17H24O2
3-methyleneisobenzofuran-1(3H)-one 3-methyleneisobenzofuran-1(3H)-one 3453-63-2 C9H6O2
Irbesartan impurity A Irbesartan impurity A C25H28N6O
N-DesMethyl SuMatriptan N-DesMethyl SuMatriptan 88919-51-1 C13H19N3O2S
2-epi-(-)-EMtricitabine 2-epi-(-)-EMtricitabine 145416-34-8 C8H10FN3O3S
Parent nucleus of cefotiaM hydrochloride Parent nucleus of cefotiaM hydrochloride 372092-19-8 C13H21N7O3S2
Bisacodyl Related Compound E (20 mg) (2-[(4-Acetoxyphenyl)(pyridin-2-yl)methyl]phenyl acetate) Bisacodyl Related Compound E (20 mg) (2-[(4-Acetoxyphenyl)(pyridin-2-yl)methyl]phenyl acetate) 111664-35-8 C22H19NO4
N-METHYL-3-CHLORO-3-PHENYL PROPYLAMINE HCL N-METHYL-3-CHLORO-3-PHENYL PROPYLAMINE HCL 128036-32-8 C10H15Cl2N
2,4,5-TRIFLUORO-3-METHOXYBENZOIC ACID 2,4,5-TRIFLUORO-3-METHOXYBENZOIC ACID 11281-65-5 C8H5F3O3
METHYL TRIPHENYLMETHYL ETHER METHYL TRIPHENYLMETHYL ETHER 596-31-6 C20H18O
CLOPIDOGREL CARBOXYLIC ACID CLOPIDOGREL CARBOXYLIC ACID 144457-28-3 C15H14ClNO2S
RAC (CIS/TRANS) DONEPEZIL N-OXIDE RAC (CIS/TRANS) DONEPEZIL N-OXIDE 120013-84-5 C24H29NO4
5-Carboxy-2'-deoxyuridine 5-Carboxy-2'-deoxyuridine 14599-46-3 C10H12N2O7
METOPROLOL IMPURITY D METOPROLOL IMPURITY D C15H25NO3
NITRENDIPINE IMPURITY A NITRENDIPINE IMPURITY A
TAMSULOSIN IMPURITY D TAMSULOSIN IMPURITY D C20H28N2O5S
Macitentan Hydroxy amine Impurity Macitentan Hydroxy amine Impurity 2211059-05-9 C12H12BrN3O2
1,3-diethyl-1,3-dimethylurea 1,3-diethyl-1,3-dimethylurea 31468-19-6 C7H16N2O
2,4(1H,3H)-Pyrimidinedione, 6-[(3R)-3-amino-1-piperidinyl]-3-methyl- 2,4(1H,3H)-Pyrimidinedione, 6-[(3R)-3-amino-1-piperidinyl]-3-methyl- 2276323-24-9 C10H16N4O2
7H-Purine-7-acetic acid, 1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-, ethyl ester 7H-Purine-7-acetic acid, 1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-, ethyl ester 7029-96-1 C11H14N4O4
N-(2-Amino-4,5,6,7-tetrahydro-benzothiazol-6-yl)-acrylamide N-(2-Amino-4,5,6,7-tetrahydro-benzothiazol-6-yl)-acrylamide
Rifampin Impurity 6 Rifampin Impurity 6
Cefuroxime Dioxide Impurity(Cefuroxime Sulfoxide) Cefuroxime Dioxide Impurity(Cefuroxime Sulfoxide)
Ampicillin Impurity F(USP) Ampicillin Impurity F(USP)
1-Pyrrolidinecarboxylic acid, 3,3'-dithiobis[5-[(dimethylamino)carbonyl]-, 1,1'-bis[(4-nitrophenyl)methyl] ester, (3S,3'S,5S,5'S)- 1-Pyrrolidinecarboxylic acid, 3,3'-dithiobis[5-[(dimethylamino)carbonyl]-, 1,1'-bis[(4-nitrophenyl)methyl] ester, (3S,3'S,5S,5'S)- 936226-36-7 C30H36N6O10S2
D-Glucitol, 1,5-anhydro-1-C-[4-chloro-3-[[4-(1-methylethoxy)phenyl]methyl]phenyl]-, (1S)- D-Glucitol, 1,5-anhydro-1-C-[4-chloro-3-[[4-(1-methylethoxy)phenyl]methyl]phenyl]-, (1S)- 946525-39-9 C22H27ClO6
Topiroxostat Impurity 42 Topiroxostat Impurity 42
Crisaborole intermediate Crisaborole intermediate 1187188-60-8 C14H13BO4
Regorafenib Impurity MHY Regorafenib Impurity MHY
2-Thiazolamine, 5-(4-cyclohexyl-1-piperazinyl)-4-(4,5-dichloro-2-thienyl)- 2-Thiazolamine, 5-(4-cyclohexyl-1-piperazinyl)-4-(4,5-dichloro-2-thienyl)- 570407-63-5 C17H22Cl2N4S2
INDEX NAME NOT YET ASSIGNED INDEX NAME NOT YET ASSIGNED 2417213-74-0 C42H42N4O12S
Lumateperone Impurity 6 Lumateperone Impurity 6 313368-82-0 C23H26FN3O
1H-?Indole-?5,?6-?diol, 1-?[3-?(4-?hydroxyphenyl)?-?1-?methylpropyl]?- 1H-?Indole-?5,?6-?diol, 1-?[3-?(4-?hydroxyphenyl)?-?1-?methylpropyl]?- 2514709-72-7 C18H19NO3
6,6'-oxybis(3-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoic acid) 6,6'-oxybis(3-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzoic acid)
4-Pyrimidineethanol, 6-bromo-α-(2,4-difluorophenyl)-5-fluoro-β-methyl-α-(1H-1,2,4-triazol-1-ylmethyl)- 4-Pyrimidineethanol, 6-bromo-α-(2,4-difluorophenyl)-5-fluoro-β-methyl-α-(1H-1,2,4-triazol-1-ylmethyl)- 1307315-04-3 C16H13BrF3N5O
Cycloocta[b]pyridine, 2-(4-ethyl-1,4-dioxido-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydro- Cycloocta[b]pyridine, 2-(4-ethyl-1,4-dioxido-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydro- 2247538-61-8 C23H30FN3O2
Vonoprazan Impurity B-3 Vonoprazan Impurity B-3
3-Azetidineacetamide, 1-(ethylsulfonyl)-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]- 3-Azetidineacetamide, 1-(ethylsulfonyl)-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]- 2271228-51-2 C16H19N7O3S
Budesonide Impurity 26 Budesonide Impurity 26
Peramivir Impurity 48 Peramivir Impurity 48
NA NA
3-Quinolinemethanol, 2-cyclopropyl-4-phenyl- 3-Quinolinemethanol, 2-cyclopropyl-4-phenyl- 2153433-73-7 C19H17NO
Avatrombopag Impurity 37 Avatrombopag Impurity 37
Piperacillin ImpurityABCDEFGHI Piperacillin ImpurityABCDEFGHI
5,6-DIMETHOXY-2-PYRIDIN-4-YLMETHYL-INDAN-1-ONE 5,6-DIMETHOXY-2-PYRIDIN-4-YLMETHYL-INDAN-1-ONE 4803-57-0 C17H17NO3
3-(Dimethylamino)-1-(2-thienyl)-1-propanol 3-(Dimethylamino)-1-(2-thienyl)-1-propanol 13636-02-7 C9H15NOS
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