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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
DEHYDROARIPIPRAZOLE, HYDROCHLORIDE DEHYDROARIPIPRAZOLE, HYDROCHLORIDE 1008531-60-9 C23H26Cl3N3O2
N-(3-GUANIDINO-4-METHYLPHENYL)-4-(METHYLPIPERAZINE-1-YL-METHYL)BENZAMIDE N-(3-GUANIDINO-4-METHYLPHENYL)-4-(METHYLPIPERAZINE-1-YL-METHYL)BENZAMIDE 581076-65-5 C21H28N6O
Tirofiban-d9 Hydrochloride Tirofiban-d9 Hydrochloride 1331911-68-2 C22H37ClN2O5S
N-METHYL-3-CHLORO-3-PHENYL PROPYLAMINE HCL N-METHYL-3-CHLORO-3-PHENYL PROPYLAMINE HCL 128036-32-8 C10H15Cl2N
3-Methoxy-2,4,5-trifluorobenzoic acid 3-Methoxy-2,4,5-trifluorobenzoic 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
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
3-methyleneisobenzofuran-1(3H)-one 3-methyleneisobenzofuran-1(3H)-one 3453-63-2 C9H6O2
Irbesartan impurity A Irbesartan impurity A C25H28N6O
(-)-menthyl benzoate (-)-menthyl benzoate 6284-35-1 C17H24O2
(1R,3S)-(3-Aminocyclopentyl) methanol (1R,3S)-(3-Aminocyclopentyl) methanol 117957-62-7 C6H13NO
2-[[6-[(3R)-3-tert-butoxycarbonylamino-1-piperidinyl]-3,4-dihydro-2,4-dioxo-3-methyl-1(2H)-pyrimidinyl]methyl]benzonitrile 2-[[6-[(3R)-3-tert-butoxycarbonylamino-1-piperidinyl]-3,4-dihydro-2,4-dioxo-3-methyl-1(2H)-pyrimidinyl]methyl]benzonitrile 1246610-74-1 C23H29N5O4
((R)-3-Methyl-1-((R)-3-phenyl-2-(pyrazine-2-carboxaMido)propanaMido)butyl)boronic acid ((R)-3-Methyl-1-((R)-3-phenyl-2-(pyrazine-2-carboxaMido)propanaMido)butyl)boronic acid 1132709-15-9 C19H25BN4O4
(S)-N-(1-AMino-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxaMide (S)-N-(1-AMino-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxaMide 289472-80-6 C14H14N4O2
(3aS,4R,6S,6aR)-6-AMinotetrahydro-2,2-diMethyl-4H-cyclopenta-1,3-dioxol-4-ol (3aS,4R,6S,6aR)-6-AMinotetrahydro-2,2-diMethyl-4H-cyclopenta-1,3-dioxol-4-ol 592533-90-9 C8H15NO3
(4R,6S)-tert-Butyl-6-cyanoMethyl-2,2-diMethyl-1,3-dioxane-4-acetate (4R,6S)-tert-Butyl-6-cyanoMethyl-2,2-diMethyl-1,3-dioxane-4-acetate 196085-84-4 C14H23NO4
(1R,2R,3S,5R)-3-(7-((1S,2R)-2-(3,4-difluorophenyl)cyclopropylaMino)-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyriMidin-3-yl)-5-(2-hydroxyethoxy)cyclopentane-1,2-diol (1R,2R,3S,5R)-3-(7-((1S,2R)-2-(3,4-difluorophenyl)cyclopropylaMino)-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyriMidin-3-yl)-5-(2-hydroxyethoxy)cyclopentane-1,2-diol 2096989-55-6 C23H28F2N6O4S
Rivaroxaban iMpurity Rivaroxaban iMpurity 1616563-62-2 C15H17N3O5
AMoxicillin iMpurity K AMoxicillin iMpurity K C16H19N3O5S
cefoxitin iMpurity D cefoxitin iMpurity D
3-Morpholinone, 4-(2,4-diaMinophenyl)- 3-Morpholinone, 4-(2,4-diaMinophenyl)- 482308-13-4 C10H13N3O2
BenzenesulfonaMide, N-[1,6-dihydro-5-(2-Methoxyphenoxy)-6-oxo[2,2'-bipyriMidin]-4-yl]-4-(1,1-diMethylethyl)- BenzenesulfonaMide, N-[1,6-dihydro-5-(2-Methoxyphenoxy)-6-oxo[2,2'-bipyriMidin]-4-yl]-4-(1,1-diMethylethyl)- 174227-14-6 C25H25N5O5S
BenzaMide, N-[1-(3,5-di-O-benzoyl-2-C-Methyl-β-D-arabinofuranosyl)-1,2-dihydro-2-oxo-4-pyriMidinyl]- BenzaMide, N-[1-(3,5-di-O-benzoyl-2-C-Methyl-β-D-arabinofuranosyl)-1,2-dihydro-2-oxo-4-pyriMidinyl]- 863329-62-8 C31H27N3O8
Fosfluconazole iMpurity Fosfluconazole iMpurity
cinacalcet iMpurity 8 cinacalcet iMpurity 8 1271930-15-4 C32H31F6N
AtracuriuM IMpurity D2 (cis-Quaternary Alcohol) AtracuriuM IMpurity D2 (cis-Quaternary Alcohol) 1100676-16-1 C35H47NO10S
AzithroMycin IMpurity O AzithroMycin IMpurity O
Canagliflozin Impurity 12 Canagliflozin Impurity 12
Canagliflozin Impurity G Canagliflozin Impurity G
Dolutegravir Impurity 1 Dolutegravir Impurity 1
Empagliflozin impurity F Empagliflozin impurity F
Ibrutinib Impurity 12 Ibrutinib Impurity 12
Nintedanib impurity J Nintedanib impurity J 1139457-10-5 C23H17N3O5
DSKNHVUKATXSCQ-GDVCOKDOSA-N DSKNHVUKATXSCQ-GDVCOKDOSA-N 188915-50-6 C14H14ClN3O4S
Clarthromycin EP Impurity B Clarthromycin EP Impurity B 299409-85-1 C37H67NO13
(4-Chloro-3-trifluoromethyl-phenyl)-carbamic acid tert-butyl ester (4-Chloro-3-trifluoromethyl-phenyl)-carbamic acid tert-butyl ester 352277-93-1 C12H13ClF3NO2
Brexpiprazole Impurity 15 Brexpiprazole Impurity 15
Edoxaban Impurity 16 Edoxaban Impurity 16 480450-69-9 C14H25N5O3
Rivaroxaban Impurity 24 Rivaroxaban Impurity 24
Ticagrelor Ticagrelor 1265919-24-1 C12H21NO5
Clindamycin (2R-cis)-Diastereomer Clindamycin (2R-cis)-Diastereomer 1440605-46-8 C18H33ClN2O5S
Genistein 7,4'-di-O-β-D-glucopyranoside Genistein 7,4'-di-O-β-D-glucopyranoside 36190-98-4 C27H30O15
Aprepitant Impurity 3 Aprepitant Impurity 3
Cabozantinib Impurity F Cabozantinib Impurity F
Cefmetazole sodium Impurity 7 Cefmetazole sodium Impurity 7 60638-57-5 C11H14N6O4S2
Tadalafil EP Impurity I Tadalafil EP Impurity I
1,4'-Bipiperidine, 1'-(phenylmethyl)- 1,4'-Bipiperidine, 1'-(phenylmethyl)- 116269-53-5 C17H26N2
[2-(4-Methoxyphenyl)-1-methylethyl]-formamide [2-(4-Methoxyphenyl)-1-methylethyl]-formamide 126002-14-0 C11H15NO2
6-(2,5-dichlorophenyl)-1,3,5-Triazine-2,4(1H,3H)-dione 6-(2,5-dichlorophenyl)-1,3,5-Triazine-2,4(1H,3H)-dione 30222-00-5 C9H5Cl2N3O2
(2'R)-2'-Deoxy-2'-fluoro-2'-Methyl-uridine 3',5'-dibenzoate (2'R)-2'-Deoxy-2'-fluoro-2'-Methyl-uridine 3',5'-dibenzoate 863329-65-1 C24H21FN2O7
Anastrozole iMpurityC Anastrozole iMpurityC
Celecoxib iMpurity-A Celecoxib iMpurity-A
EMtricitabine iMpurity A EMtricitabine iMpurity A
RocuroniuMbroMide iMpurity D RocuroniuMbroMide iMpurity D
(3S,4R)-4-(4-Fluorophenyl)piperidine-3-Methanol Hydrochloride (3S,4R)-4-(4-Fluorophenyl)piperidine-3-Methanol Hydrochloride 220548-73-2 C12H17ClFNO
LaMotrigine IMpurity D LaMotrigine IMpurity D 661463-79-2 C9H5Cl2N3O2
BendaMustine Dihydroxy IMpurity BendaMustine Dihydroxy IMpurity 109882-29-3 C16H24ClN3O4
BroMocriptine IMpurity G BroMocriptine IMpurity G C32H40BrN5O5
Captopril IMpurity H Captopril IMpurity H 205521-07-9 C15H23NO5S2
Cefdinir IMpurity 3 (Cefdinir Decarboxy Open Ring Lactone (Mixture of A and B)) Cefdinir IMpurity 3 (Cefdinir Decarboxy Open Ring Lactone (Mixture of A and B)) 178949-04-7 C13H15N5O4S2
Ceftriaxone IMpurit D Ceftriaxone IMpurit D
Ciprofloxacin Related CoMpound Ciprofloxacin Related CoMpound 528851-30-1 C15H17Cl2N3O3
Dasatinib IMpurity 4 Dasatinib IMpurity 4
Deferasirox Methyl Ester Deferasirox Methyl Ester 1266741-05-2 C22H17N3O4
Deltacortinene Acetate (Predisolone Acetate IMpurity) Deltacortinene Acetate (Predisolone Acetate IMpurity) 4380-55-6 C23H28O5
Entecavir IMpurity A Entecavir IMpurity A
Fasudil IMpurity 1 Fasudil IMpurity 1 1423155-03-6 C14H17N3O2S
Irbesartan IMpurity Irbesartan IMpurity 1079997-01-5 C26H30N6O2
Montelukast EP IMpurity I Montelukast EP IMpurity I
RaceMic Fudosteine HCl RaceMic Fudosteine HCl 1023971-15-4 C6H13NO3S
RocuroniuM BroMide IMpurity 18 RocuroniuM BroMide IMpurity 18
SalMeterol IMpurity E SalMeterol IMpurity E C25H37NO4
SulbactaM IMpurity C SulbactaM IMpurity C
Terazosin IMpurity J Terazosin IMpurity J 152551-75-2 C19H27N5O4
Ticarcillin SodiuM IMpurity A Ticarcillin SodiuM IMpurity A 36041-93-7 C14H16N2O4S2
R-afatinib R-afatinib 945553-91-3 C24H25ClFN5O3
EthanediaMide iMpurity E EthanediaMide iMpurity E C2H4N2O2
Methyl (1-benzyl-4-Methylpiperidin-3-yl)carbaMate Methyl (1-benzyl-4-Methylpiperidin-3-yl)carbaMate 1206875-41-3 C15H22N2O2
S-(-)-[1-(3-Methoxyphenyl)ethyl]-N,N-diMethylaMine S-(-)-[1-(3-Methoxyphenyl)ethyl]-N,N-diMethylaMine 889443-69-0 C11H17NO
N-(4-aMinophenyl)-2-chloro-N-MethylacetaMide N-(4-aMinophenyl)-2-chloro-N-MethylacetaMide 855860-75-2 C9H11ClN2O
Ibrutinib iMpurity Ibrutinib iMpurity 936351-48-3 C12H13ClN2O
1-Phenyl-5-(pyridin-2-yl)-1,2-dihydropyridin-2-one 1-Phenyl-5-(pyridin-2-yl)-1,2-dihydropyridin-2-one 381725-50-4 C16H12N2O
Abacavir Impurity E Abacavir Impurity E 208762-35-0 C14H20N6O
(1R,5S,6R)-rel-5-(1-Ethylpropoxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic Acid Ethyl Ester (1R,5S,6R)-rel-5-(1-Ethylpropoxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic Acid Ethyl Ester 347378-74-9 C14H22O4
(3R,5R,6E)-7-[2-Cyclopropyl-4-(4-fluorophenyl)-3-quinolinyl]-3,5-dihydroxy-6-heptenoic Acid CalciuM Salt (3R,5R,6E)-7-[2-Cyclopropyl-4-(4-fluorophenyl)-3-quinolinyl]-3,5-dihydroxy-6-heptenoic Acid CalciuM Salt 254452-96-5 C25H24FNO4
(αZ)-α-(MethoxyiMino)-N-[(5aR,6R)-1,4,5a,6-tetrahydro-1,7-dioxo-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl]-2-furanacetaMide (αZ)-α-(MethoxyiMino)-N-[(5aR,6R)-1,4,5a,6-tetrahydro-1,7-dioxo-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl]-2-furanacetaMide 947723-87-7 C15H13N3O6S
1-[[2-[(2-AMinophenyl)aMino]-5-Methyl-3-thienyl]carbonyl]-4-Methyl-piperazine 1-[[2-[(2-AMinophenyl)aMino]-5-Methyl-3-thienyl]carbonyl]-4-Methyl-piperazine 138564-61-1 C17H22N4OS
1-Cyclopropyl-6,7-difluoro-1,4-dihydro-8-hydroxy-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester 1-Cyclopropyl-6,7-difluoro-1,4-dihydro-8-hydroxy-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester 452092-31-8 C15H13F2NO4
2-(IsopropylaMino)-2',6'-acetoxylidide Hydrochloride 2-(IsopropylaMino)-2',6'-acetoxylidide Hydrochloride 35891-87-3 C13H21ClN2O
2,2'-IMinobis(N-(2,6-DiMethylphenyl)acetiaMide Hydrochloride 2,2'-IMinobis(N-(2,6-DiMethylphenyl)acetiaMide Hydrochloride 1135231-62-7 C20H26ClN3O2
3,4-O-(DiethylMethylidene) ShikiMic Acid Ethyl Ester 3,4-O-(DiethylMethylidene) ShikiMic Acid Ethyl Ester 943515-58-0 C14H22O5
4-Hydroxy-α1-[[[6-(2-phenylethoxy)hexyl]aMino]Methyl]-1,3-benzenediMethanol 4-Hydroxy-α1-[[[6-(2-phenylethoxy)hexyl]aMino]Methyl]-1,3-benzenediMethanol 94749-02-7 C23H33NO4
5-[2-Ethoxy-5-[(4-Methyl-1-piperazinyl)thioxoMethyl]phenyl]-1,6-dihydro-1-Methyl-3-propyl-7H-pyrazolo[4,3-d]pyriMidine-7-thione 5-[2-Ethoxy-5-[(4-Methyl-1-piperazinyl)thioxoMethyl]phenyl]-1,6-dihydro-1-Methyl-3-propyl-7H-pyrazolo[4,3-d]pyriMidine-7-thione 1333233-46-7 C23H30N6OS2
BIRG 613 BS BIRG 613 BS 287980-85-2 C15H16N4O
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