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
![(5R,6S)-6-((R)-1-Hydroxyethyl)-7-oxo-3-((S)-tetrahydrofuran-2-yl)-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid chemical structure](/media/structures/HGGAKXAHAYOLDJ-WAYXCLAOSA-N.svg)
(5R,6S)-6-((R)-1-Hydroxyethyl)-7-oxo-3-((S)-tetrahydrofuran-2-yl)-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid
- CAS
- 106560-13-8
- Formula
- C12H15NO5S
- MW
- 285.32 g/mol
VQ-045004
![(5R,8S,9R,10S,13S,14S,17R)-13-Ethyl-17-ethynyl-11-methylene-2,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-ol chemical structure](/media/structures/RSMGIILCLKIXNG-GDLCRWSOSA-N.svg)
(5R,8S,9R,10S,13S,14S,17R)-13-Ethyl-17-ethynyl-11-methylene-2,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-ol
- CAS
- 201360-83-0
- Formula
- C22H30O
- MW
- 310.5 g/mol
VQ-044388
![(5R)-3-[6-[2-[(2,6-Dichlorophenyl)methoxy]ethoxy]hexyl]-5-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-1,3-oxazolidin-2-one chemical structure](/media/structures/XQWNKZGGCAFXHI-SANMLTNESA-N.svg)
(5R)-3-[6-[2-[(2,6-Dichlorophenyl)methoxy]ethoxy]hexyl]-5-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-1,3-oxazolidin-2-one
- CAS
- 503068-36-8
- Formula
- C28H35Cl2NO6
- MW
- 552.5 g/mol
VQ-042877
![(5S,6S,9R)-5-Amino-6-(2,3-difluorophenyl)-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-9-ol chemical structure](/media/structures/LZGRTPPTGDJDKZ-ZBINZKHDSA-N.svg)
(5S,6S,9R)-5-Amino-6-(2,3-difluorophenyl)-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-9-ol
- CAS
- 1373116-05-2
- Formula
- C16H16F2N2O
- MW
- 290.31 g/mol
VQ-033550
![(5S,6S,9R)-5-Amino-6-(2,3-difluorophenyl)-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-9-ol Dihydrochloride chemical structure](/media/structures/CVLHZDNYCBDZFV-YXZKBNGESA-N.svg)
(5S,6S,9R)-5-Amino-6-(2,3-difluorophenyl)-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-9-ol Dihydrochloride
- CAS
- 1373116-07-4
- Formula
- C16H18Cl2F2N2O
- MW
- 363.2 g/mol
VQ-033551
![(5S,6S,9R)-6-(2,3-Difluorophenyl)-9-((triisopropylsilyl)oxy)-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-5-amine Dihydrochloride chemical structure](/media/structures/XVSHWNVACRGINI-JNBCVTSQSA-N.svg)
(5S,6S,9R)-6-(2,3-Difluorophenyl)-9-((triisopropylsilyl)oxy)-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-5-amine Dihydrochloride
- CAS
- 1373116-04-1
- Formula
- C25H38Cl2F2N2OSi
- MW
- 519.6 g/mol
VQ-041917
(5S)-N-(Methoxycarbonyl)-L-valyl-5-methyl-L-proline
- CAS
- 1335316-40-9
- Formula
- C13H22N2O5
- MW
- 286.32 g/mol
VQ-044025
(5Z,9Z,13Z)-6,10,14,18-Tetramethylnonadeca-5,9,13,17-tetraen-2-one
- CAS
- 3796-67-6
- Formula
- C23H38O
- MW
- 330.5 g/mol
VQ-042436
(6-Aminopyridin-3-yl)(4-ethylpiperazin-1-yl)methanone
- CAS
- 1275904-70-5
- Formula
- C12H18N4O
- MW
- 234.3 g/mol
VQ-044752
![(6,11-Dihydro-5H-dibenzo[b,e]azepin-6-yl)methanamine chemical structure](/media/structures/FPKDBVUHIXYLNP-UHFFFAOYSA-N.svg)
(6,11-Dihydro-5H-dibenzo[b,e]azepin-6-yl)methanamine
- CAS
- 41218-84-2
- Formula
- C15H16N2
- MW
- 224.3 g/mol
VQ-021994
![(6BR,10aS)-3-Methyl-2,3,6b,7,8,9,10,10a-octahydro-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxaline chemical structure](/media/structures/QLGUCSLWLPCOTR-RYUDHWBXSA-N.svg)
(6BR,10aS)-3-Methyl-2,3,6b,7,8,9,10,10a-octahydro-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxaline
- CAS
- 313368-85-3
- Formula
- C14H19N3
- MW
- 229.32 g/mol
VQ-031680
![(6BR,10aS)-8-(4-(4-Fluorophenyl)-4-oxobutyl)-3-methyl-6b,7,8,9,10,10a-hexahydro-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxalin-2(3H)-one chemical structure](/media/structures/ULYPMCDOUIQKSJ-PMACEKPBSA-N.svg)
(6BR,10aS)-8-(4-(4-Fluorophenyl)-4-oxobutyl)-3-methyl-6b,7,8,9,10,10a-hexahydro-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxalin-2(3H)-one
- CAS
- 2117618-95-6
- Formula
- C24H26FN3O2
- MW
- 407.5 g/mol
VQ-044808
![(6R-Trans)-7-[[(2-Amino-4-thiazolyl)acetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en chemical structure](/media/structures/SGWIRMONYCAJIS-BXKDBHETSA-N.svg)
(6R-Trans)-7-[[(2-Amino-4-thiazolyl)acetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en
- CAS
- 79350-10-0
- Formula
- C14H14N4O4S2
- MW
- 366.4 g/mol
VQ-022071
![(6R,10S)-6,7,9,10-Tetrahydro-8H-6,10-methanoazepino[4,5-g]quinoxaline-8-carboxylic Acid chemical structure](/media/structures/DPKXSOCWNABKSB-UHFFFAOYSA-N.svg)
(6R,10S)-6,7,9,10-Tetrahydro-8H-6,10-methanoazepino[4,5-g]quinoxaline-8-carboxylic Acid
- CAS
- 1026685-55-1
- Formula
- C14H13N3O2
- MW
- 255.27 g/mol
VQ-034546
![(6R,7R)-3-((Carbamoyloxy)methyl)-7-((Z)-2-(furan-2-yl)-2-(methoxyimino)acetamido)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic acid chemical structure](/media/structures/AIEMBSSBMKFDGU-YNZZGVKBSA-N.svg)
(6R,7R)-3-((Carbamoyloxy)methyl)-7-((Z)-2-(furan-2-yl)-2-(methoxyimino)acetamido)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic acid
- CAS
- 229499-08-5
- Formula
- C16H16N4O8S
- MW
- 424.4 g/mol
VQ-024890
![(6R,7R)-3-(Acetoxymethyl)-7-((((6R,7R)-7-amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl)methyl)amino)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid chemical structure](/media/structures/PEIGMHGLJQAJIH-DJUAPZDMSA-N.svg)
(6R,7R)-3-(Acetoxymethyl)-7-((((6R,7R)-7-amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl)methyl)amino)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
- CAS
- 2416213-67-5
- Formula
- C18H20N4O8S2
- MW
- 484.5 g/mol
VQ-043100
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