Impurities & Reference Standards
API Impurities
Source 1942 api impurities for research, QC and production, documented with COA and SDS.
14,098products
1,516in stock
COA + SDSwith every lot
(1S,2S,3R,4R,5R)-1-(4-Chloro-3-(4-ethoxybenzyl)phenyl)hexane-1,2,3,4,5,6-hexaol
- CAS
- 1938090-31-3
- Formula
- C21H27ClO7
- MW
- 426.9 g/mol
VQ-047932
(1S,2S,3R,4R)-3-((S)-1-Acetamido-2-ethylbutyl)-2-acetoxy-4-guanidinocyclopentane-1-carboxylic Acid
- CAS
- 2758048-73-4
- Formula
- C17H30N4O5
- MW
- 370.4 g/mol
VQ-033117
(1S,2S,3S,5S)-3-(Benzyloxy)-5-(6-(benzyloxy)-2-(((4-methoxyphenyl)diphenylmethyl)amino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-ol
- CAS
- 142217-78-5
- Formula
- C52H49N5O5
- MW
- 824 g/mol
VQ-025546
(1S,2S,3S,5S)-3-(Benzyloxy)-5-(6-(benzyloxy)-2-(tritylamino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentan-1-ol
- CAS
- 1345339-53-8
- Formula
- C51H47N5O4
- MW
- 793.97 g/mol
VQ-044108
(1S,2S,3S,5S)-5-(2-Amino-6-(benzyloxy)-9H-purin-9-yl)-3-(benzyloxy)-2-((benzyloxy)methyl)cyclopentan-1-ol
- CAS
- 142217-77-4
- Formula
- C32H33N5O4
- MW
- 551.6 g/mol
VQ-030494
(1S,2S,5R)-2-Isopropyl-5-methylcyclohexane-1-carboxylic Acid
- CAS
- 70985-58-9
- Formula
- C11H20O2
- MW
- 184.27 g/mol
VQ-029017
![(1S,2S,5S)-4-[2-[2-(6,6-Dimethylbicyclo[3.1.1]hept-2-yl)ethoxy]ethyl]morpholine chemical structure](/media/structures/FPLHEALBGYMFJM-UHFFFAOYSA-N.svg)
(1S,2S,5S)-4-[2-[2-(6,6-Dimethylbicyclo[3.1.1]hept-2-yl)ethoxy]ethyl]morpholine
- CAS
- 38284-47-8
- Formula
- C17H31NO2
- MW
- 281.4 g/mol
VQ-033190
(1S,2S)-(+)-2-Amino-1-(4-nitrophenyl)-1,3-propanediol
- CAS
- 2964-48-9
- Formula
- C9H12N2O4
- MW
- 212.2 g/mol
VQ-024924
(1S,2S)-1-(6-Bromo-2-methoxyquinolin-3-yl)-4-(dimethylamino)-2-(naphthalen-2-yl)-1-phenylbutan-2-ol
- CAS
- 2924118-18-1
- Formula
- C32H31BrN2O2
- MW
- 555.5 g/mol
VQ-024511
(1S,2S)-2-(3,4-Difluorophenyl)-cyclopropanamine hydrochloride
- CAS
- 3094994-75-6
- Formula
- C9H10ClF2N
- MW
- 205.63 g/mol
VQ-042542
(1S,2S)-2-(3,4-Difluorophenyl)cyclopropanecarboxylic acid
- CAS
- 1459720-31-0
- Formula
- C10H8F2O2
- MW
- 198.17 g/mol
VQ-044683
(1S,3R,4S)-4-Amino-3-(Boc-amino)-cyclohexane-carboxylic acid ethyl ester
- CAS
- 480449-84-1
- Formula
- C14H26N2O4
- MW
- 286.37 g/mol
VQ-036875
(1S,3R,4S)-4-Azido-3-(tertbutoxycarbonylamino) cyclohexane carboxylic acid
- CAS
- 365997-67-7
- Formula
- C12H20N4O4
- MW
- 284.31 g/mol
VQ-030365
![(1S,3R,5S)-2-Azabicyclo[3.1.0]hexane-3-carboxamide methanesulfonate chemical structure](/media/structures/WPIYZQBALIBMAA-ASMLCRKRSA-N.svg)
(1S,3R,5S)-2-Azabicyclo[3.1.0]hexane-3-carboxamide methanesulfonate
- CAS
- 1564266-74-5
- Formula
- C7H14N2O4S
- MW
- 222.26 g/mol
VQ-027990
![(1S,3R)-1-Benzo[1,3]dioxol-5-yl-2-(2-chloro-acetyl)-2,3,4,9-tetrahydro-1H-b-carboline-3-carboxylic Acid Methyl Ester chemical structure](/media/structures/JUKHNCNDFOAFLT-IERDGZPVSA-N.svg)
(1S,3R)-1-Benzo[1,3]dioxol-5-yl-2-(2-chloro-acetyl)-2,3,4,9-tetrahydro-1H-b-carboline-3-carboxylic Acid Methyl Ester
- CAS
- 629652-40-0
- Formula
- C22H19ClN2O5
- MW
- 426.8 g/mol
VQ-023827
![(1S,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate chemical structure](/media/structures/LIPVUDSNGRJSQE-QAPCUYQASA-N.svg)
(1S,3R)-Methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate
- CAS
- 171596-42-2
- Formula
- C20H18N2O4
- MW
- 350.4 g/mol
VQ-023826
![(1S,3S,5'R,7'R)-N3,N3',5-trimethyl-[1,1'-bi(adamantane)]-3,3'-diamine](/media/pack/1s3s5r7r-n3n35-trimethyl-11-biadamantane-33-diamine.svg?v=3)
(1S,3S,5'R,7'R)-N3,N3',5-trimethyl-[1,1'-bi(adamantane)]-3,3'-diamine
- CAS
- 1082700-69-3
- Formula
- C23H38N2
- MW
- 342.56 g/mol
VQ-031784
![(1S,3S,5S)-2-((S)-2-Amino-2-((1s,3R,5S,7R)-4-oxoadamantan-1-yl)acetyl)-2-azabicyclo[3.1.0]hexane-3-carbonitrile hydrochloride chemical structure](/media/structures/VQDAHIJWQMOOOI-LWMKWWAESA-N.svg)
(1S,3S,5S)-2-((S)-2-Amino-2-((1s,3R,5S,7R)-4-oxoadamantan-1-yl)acetyl)-2-azabicyclo[3.1.0]hexane-3-carbonitrile hydrochloride
- CAS
- 2173146-35-3
- Formula
- C18H24ClN3O2
- MW
- 349.9 g/mol
VQ-043529
![(1S,3S,5S)-2-[(tert-Butoxy)carbonyl]-2-azabicyclo[3.1.0]hexane-3-carboxylic acid chemical structure](/media/structures/VXIIZQXOIDYWBS-FXQIFTODSA-N.svg)
(1S,3S,5S)-2-[(tert-Butoxy)carbonyl]-2-azabicyclo[3.1.0]hexane-3-carboxylic acid
- CAS
- 197142-36-2
- Formula
- C11H17NO4
- MW
- 227.26 g/mol
VQ-042115
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