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Pharmaceutical Impurity Reference Standards
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- Structure:
- Chemical Name:
- Pregabalin Impurity E
- CAS:
- 1239692-16-0
- MF:
- C11H24ClNO2
- Chemical Name:
- Rosuvastatin Impurity 86
- Chemical Name:
- Cefathiamidine Impurity 8
- Structure:
- Chemical Name:
- Urapidil impurity 7
- CAS:
- 108997-11-1
- MF:
- C24H34N4O2
- Structure:
- Chemical Name:
- methyl 3-[[4-chloro-2-(phenylamino)phenyl]methylamino]-3-oxopropanoate.
- CAS:
- 2089061-92-5
- MF:
- C17H17ClN2O3
- Chemical Name:
- Pregabalin Impurity 15
- Chemical Name:
- Pregabalin Impurity 32
- Structure:
- Chemical Name:
- 4-Hydroxyphthalic Acid
- CAS:
- 501666-22-4
- MF:
- C14H25NO6
- Structure:
- Chemical Name:
- Bupivacaine Impurity
- CAS:
- 780736-98-3
- MF:
- C14H20N2O
- Structure:
- Chemical Name:
- rel-(4aR,7aR)-6-Benzyloctahydro-1H-pyrrolo[3,4-b]pyridine
- CAS:
- 161594-54-3
- MF:
- C14H20N2
- Structure:
- Chemical Name:
- 1,2-bis(4-(3-(trifluoromethyl)phenyl)piperazin-1-yl)ethane
- CAS:
- 51299-16-2
- MF:
- C24H28F6N4
- Structure:
- Chemical Name:
- (R)-N-(1-(7,8-dihydronaphthalen-1-yl)ethyl)-3-(3-(trifluoromethyl)phenyl)propan-1-amine
- CAS:
- 802918-35-0
- MF:
- C22H24F3N
- Structure:
- Chemical Name:
- Demiditraz racemate
- CAS:
- 944263-08-5
- MF:
- C13H16N2
- Structure:
- Chemical Name:
- Ropivacaine-iPr
- CAS:
- 175888-75-2
- MF:
- C17H26N2O
- Structure:
- Chemical Name:
- Demiditraz IMpurity
- CAS:
- 944267-48-5
- MF:
- C19H18N2O
- Structure:
- Chemical Name:
- Apremilast impurity 18
- CAS:
- 1407140-51-5
- MF:
- C20H32N2O6S
- Structure:
- Chemical Name:
- Betamethasone EP Impurity F
- CAS:
- 330157-04-5
- MF:
- C22H28O4
- Chemical Name:
- Capecitabine Impurity 8
- Chemical Name:
- PraMipexole IMpurity V (PraMipexole IMpurity Z)
- Structure:
- Chemical Name:
- Prasugrel Acetyl IMpurity
- CAS:
- 1443034-67-0
- MF:
- C18H18FNO3S
- Chemical Name:
- Propofol IMpurity G
- Structure:
- Chemical Name:
- SalMeterol IMpurity A
- MF:
- C25H37NO4
- Structure:
- Chemical Name:
- Sitagliptin Defuoro IMpurity 3
- CAS:
- 851307-12-5
- MF:
- C15H19F2NO4
- Structure:
- Chemical Name:
- Sitagliptin N-Boc IMpurity
- CAS:
- 486460-23-5
- MF:
- C21H23F6N5O3
- Chemical Name:
- SulbactaM IMpurity D
- Chemical Name:
- Valsartan N2-Trityl IMpurity
- Structure:
- Chemical Name:
- Vardenafil IMpurity 3
- CAS:
- 1255919-01-7
- MF:
- C26H30N6O4S
- Structure:
- Chemical Name:
- Montelukast Cyclopropaneacetonitrile
- CAS:
- 866923-62-8
- MF:
- C35H35ClN2OS
- Structure:
- Chemical Name:
- (3R,4R,5R,6S)-2-(acetoxyMethyl)-6-(4-chloro-3-(4-ethoxybenzyl)phenyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate
- CAS:
- 461432-24-6
- MF:
- C22H27ClO7
- Chemical Name:
- Carfilzomib Impurity D
- Chemical Name:
- Cefodizime Impurity 4
- Structure:
- Chemical Name:
- Cefradine impurity 5
- CAS:
- 1379292-16-6
- MF:
- C10H17NO2
- Structure:
- Chemical Name:
- Clopidogrel Impurity 13
- CAS:
- 2173294-69-2
- MF:
- C16H16ClNO5S2
- Chemical Name:
- DecitaBine Impurity 12
- Chemical Name:
- Erlotinib Impurity 28
- Structure:
- Chemical Name:
- Fosaprepitant Impurity 12
- CAS:
- 172673-19-7
- MF:
- C23H22F7N4O6P
- Structure:
- Chemical Name:
- Ibuprofen Impurity 2
- MF:
- C13H18O2
- Chemical Name:
- Imatinib Impurity 9
- Chemical Name:
- Isavuconazole Impurity 22
- Chemical Name:
- Isavuconazole Impurity 28
- Structure:
- Chemical Name:
- Levothyroxine Impurity 16
- CAS:
- 909279-46-5
- MF:
- C15H11ClI3NO4
- Chemical Name:
- Linagliptin Impurity 42
- Chemical Name:
- PalBociclib Impurity 25
- Structure:
- Chemical Name:
- Posaconazole Impurity 13
- CAS:
- 357189-98-1
- MF:
- C37H40F2N8O6
- Structure:
- Chemical Name:
- Posaconazole Impurity 25
- CAS:
- 1042398-26-4
- MF:
- C16H19F2IO3
- Structure:
- Chemical Name:
- Posaconazole Impurity 42
- CAS:
- 357189-96-9
- MF:
- C36H40F2N8O5
- Chemical Name:
- Posaconazole Impurity 65
- Structure:
- Chemical Name:
- Pramipexole Dimer Impurity (Mixture of Diastereomers)
- CAS:
- 1147937-31-2
- MF:
- C13H23N3S
- Chemical Name:
- Sitafloxacin Impurity 1
- Chemical Name:
- Sitagliptin Impurity 25
- Chemical Name:
- sofosBuvir impurity 47
- Chemical Name:
- SofosBuvir Impurity 64
- Chemical Name:
- Tofacitinib Impurity W
- Chemical Name:
- Trelagliptin Impurity 21
- Structure:
- Chemical Name:
- 4'-Hydroxy TorseMide
- CAS:
- 99300-67-1
- MF:
- C16H20N4O4S
- Structure:
- Chemical Name:
- Hydroxyzine Acetic Acid Dihydrochloride
- CAS:
- 83881-56-5
- MF:
- C23H29ClN2O4
- Structure:
- Chemical Name:
- (S)-Duloxetine SuccinaMide
- CAS:
- 199191-66-7
- MF:
- C22H23NO4S
- Structure:
- Chemical Name:
- 4-Acetyl Rhein
- CAS:
- 875535-36-7
- MF:
- C17H10O7
- Structure:
- Chemical Name:
- 1-(2,6-dichlorophenyl)piperazine
- CAS:
- 63386-61-8
- MF:
- C10H12Cl2N2
- Structure:
- Chemical Name:
- Ropivacaine N-Oxide
- CAS:
- 1391053-59-0
- MF:
- C17H26N2O2
- Structure:
- Chemical Name:
- Ezetimibe Impurity
- CAS:
- 1510820-22-0
- MF:
- C24H23F2NO2
- Chemical Name:
- 10,13-bissidechainpaclitaxel
- Chemical Name:
- Istradefylline Impurity A
- Structure:
- Chemical Name:
- (3R,4S)-1-benzyl-N,4-diMethylpiperidin-3-aMine dihydrochloride
- MF:
- C14H24Cl2N2
- Structure:
- Chemical Name:
- 2-(((3-Methyl-4-nitropyridin-2-yl)Methyl)sulfinyl)-1H- benzo[d]iMidazole
- CAS:
- 142384-07-4
- MF:
- C14H12N4O3S
- Structure:
- Chemical Name:
- Valsartan Desvaleryl Impurity
- CAS:
- 676129-92-3
- MF:
- C19H21N5O2
- Chemical Name:
- Istradefylline iMpurity
- Structure:
- Chemical Name:
- (E)-Olopatadine Hydrochloride
- CAS:
- 949141-22-4
- MF:
- C21H24ClNO3
- Structure:
- Chemical Name:
- (3R,4R,5R)-3-(1-Ethylpropoxy)-4-hydroxy-5-[(Methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Ethyl Ester
- CAS:
- 204254-92-2
- MF:
- C15H26O7S
- Structure:
- Chemical Name:
- (R)-α-[(2,2-DiMethyl-1-oxopropyl)aMino]-4-hydroxybenzeneacetic Acid
- CAS:
- 205826-86-4
- MF:
- C13H17NO4
- Structure:
- Chemical Name:
- 8-Hydroxy Pitavastatin
- CAS:
- 224320-09-6
- MF:
- C25H24FNO5
- Structure:
- Chemical Name:
- α-Decitabine
- CAS:
- 22432-95-7
- MF:
- C8H12N4O4
- Structure:
- Chemical Name:
- Aloin Peracetate
- CAS:
- 64951-96-8
- MF:
- C37H38O17
- Structure:
- Chemical Name:
- L-Alanine, N-[(2,3,4,5,6-pentafluorophenoxy)phenoxyphosphinyl]-, 1-Methylethyl ester
- CAS:
- 1256490-52-4
- MF:
- C18H17F5NO5P
- Chemical Name:
- Cefditoren iMpurity 2, Cefditoren open ring
- Chemical Name:
- Ceftriaxone IMpurity C
- Chemical Name:
- Etoricoxib iMpurity 2
- Structure:
- Chemical Name:
- Lorcaserin iMpurity D
- CAS:
- 1030624-36-2
- MF:
- C11H14ClNO2
- Chemical Name:
- Ticagrelor IMpurity L (Mixture of DiastereoMers)
- Structure:
- Chemical Name:
- α-Hydroxy-α-3-thienyl-2-thiopheneacetic Acid 9-Methyl-3-oxa-9-azatricyclo[3.3.1.02,4]non-7-yl Ester
- CAS:
- 783273-13-2
- MF:
- C18H19NO4S2
- Structure:
- Chemical Name:
- 3H-4,7a-Methanocyclohept[3,3a]indeno[5,4-b]oxete Benzenepropanoic Acid Derivative
- CAS:
- 146139-03-9
- MF:
- C47H51NO14
- Structure:
- Chemical Name:
- Fluvastatin 3-Hydroxy-4,6-diene
- CAS:
- 1207963-21-0
- MF:
- C24H24FNO3
- Chemical Name:
- Cyclosporine iMpurity
- Structure:
- Chemical Name:
- ThiaMine IMpurity
- MF:
- C12H17ClN4OS
- Chemical Name:
- CitalopraM IMpurity
- Structure:
- Chemical Name:
- tert-butyl 4-(6-((6-acetyl-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)amino)pyridin-3-yl)piperazine-1-carboxylate
- CAS:
- 1651214-74-2
- MF:
- C29H37N7O4
- Structure:
- Chemical Name:
- Prasugrel Impurity 4 HCl
- CAS:
- 1618107-96-2
- MF:
- C20H22Cl2FNO3S
- Chemical Name:
- Tofacitinib Impurity K
- Structure:
- Chemical Name:
- N-(3-chloro-4-fluorophenyl)-7 -methoxy-6-(3-morpholinopropoxy)-N-(3-morpholinopropyl)quinazolin-4-amine
- CAS:
- 1502829-45-9
- MF:
- C29H37ClFN5O4
- Structure:
- Chemical Name:
- 5-(hydroxymethyl)-1,2-dihydro-1,2,4-triazol-3-one
- CAS:
- 24021-90-7
- MF:
- C3H5N3O2
- Structure:
- Chemical Name:
- ( 2-{4-[N-(5,6-diphenylpyrazin-2-yl)-N-isopropylamino]butyloxy}acetic acid tert-butylester )
- CAS:
- 475084-96-9
- MF:
- C29H37N3O3
- Structure:
- Chemical Name:
- N-(4-Hydroxymethylbenzyl) Cyclam
- CAS:
- 176252-20-3
- MF:
- C18H32N4O
- Chemical Name:
- Alvimopan Impurity 3
- Chemical Name:
- Nicergoline Impurity G
- Structure:
- Chemical Name:
- Isavuconazole Impurity 1
- CAS:
- 2069200-13-9
- MF:
- C13H12F2N4O
- Chemical Name:
- Sofosbuvir Impurity23
- Chemical Name:
- Tacrolimus Impurity 1
- Structure:
- Chemical Name:
- Bisoprolol EP Impurity F
- CAS:
- 1798418-82-2
- MF:
- C18H31NO4
- Structure:
- Chemical Name:
- Pantoprazole EP Impurity F
- CAS:
- 721924-06-7
- MF:
- C17H17F2N3O4S
- Chemical Name:
- Rosuvastatin EP Impurity E