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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

14,098products

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COA + SDSwith every lot

Reference Standard

[D-Phe3] vasopressin

[D-Phe3] vasopressin

CAS: 89576-32-9
Formula: C₄₆H₆₅N₁₅O₁₂S₂
MW: 1084.25 g/mol

VQ-044289

Reference Standard

[Des-Thr-ol8]-Cys7-amide-Octreotide chemical structure

[Des-Thr-ol8]-Cys7-amide-Octreotide

CAS: 79486-60-5
Formula: C₄₅H₅₈N₁₀O₈S₂
MW: 931.1 g/mol

VQ-038715

Reference Standard

[Glu4] Carbetocin chemical structure

[Glu4] Carbetocin

CAS: 69228-04-2
Formula: C₄₅H₆₈N₁₀O₁₃S
MW: 989.1 g/mol

VQ-027223

Reference Standard

[O1(Ac)]8-Octreotide chemical structure

[O1(Ac)]8-Octreotide

CAS: 133304-81-1
Formula: C₅₁H₆₈N₁₀O₁₁S₂
MW: 1061.3 g/mol

VQ-026981

Reference Standard

[R-(R*,S*)]-α-[(1-Carboxyethyl)amino]-γ-oxo-benzenebutanoic Acid Monoethyl Ester chemical structure

[R-(R*,S*)]-α-[(1-Carboxyethyl)amino]-γ-oxo-benzenebutanoic Acid Monoethyl Ester

CAS: 105167-27-9
Formula: C₁₅H₁₉NO₅
MW: 293.31 g/mol

VQ-030475

Reference Standard

[R-[R*,R*-(Z)]]-a-[[(2-Amino-4-thiazolyl)(methoxyimino)acetyl]amino]-1,2,5,7-tetrahydro-7-oxo-4H-Fur chemical structure

[R-[R*,R*-(Z)]]-a-[[(2-Amino-4-thiazolyl)(methoxyimino)acetyl]amino]-1,2,5,7-tetrahydro-7-oxo-4H-Fur

CAS: 75679-12-8
Formula: C₁₄H₁₅N₅O₆S₂
MW: 413.4 g/mol

VQ-022091

Reference Standard

[SP-4-2-(1R-trans)]-(1,2-Cyclohexanediamine-N,N') Dichloridoplatinum(II) chemical structure

[SP-4-2-(1R-trans)]-(1,2-Cyclohexanediamine-N,N') Dichloridoplatinum(II)

CAS: 61848-66-6
Formula: C₆H₁₄Cl₂N₂Pt
MW: 380.18 g/mol

VQ-032992

Reference Standard

[trans-4-[(tert-Butoxycarbonyl)amino]cyclohexyl]methyl 4-methylbenzenesulfonate chemical structure

[trans-4-[(tert-Butoxycarbonyl)amino]cyclohexyl]methyl 4-methylbenzenesulfonate

CAS: 947141-76-6
Formula: C₁₉H₂₉NO₅S
MW: 383.5 g/mol

VQ-049287

Reference Standard

{4-[2-(Dimethylamino)ethoxy]phenyl}methanol chemical structure

{4-[2-(Dimethylamino)ethoxy]phenyl}methanol

CAS: 131028-54-1
Formula: C₁₁H₁₇NO₂
MW: 195.26 g/mol

VQ-037764

Reference Standard

∆2-Ceftiofur chemical structure

CAS: 120962-17-6
Formula: C₁₉H₁₇N₅O₇S₃
MW: 523.6 g/mol

VQ-024878

Reference Standard

0.20 RRT Oxetacaine Impurity chemical structure

0.20 RRT Oxetacaine Impurity

CAS: 100-92-5
Formula: C₁₁H₁₇N
MW: 163.26 g/mol

VQ-004287

Reference Standard

0.45 RRT Oxetaciane Impurity

0.45 RRT Oxetaciane Impurity

Formula: C₁₇H₂₆N₂O₄
MW: 322.4 g/mol

VQ-004288

Reference Standard

1 2 4 Dimethylphenyl propan 1 one chemical structure

1 2 4 Dimethylphenyl propan 1 one

CAS: 35031-55-1
Formula: C₁₁H₁₄O
MW: 162.23 g/mol

VQ-037024

Reference Standard

1 2 Aminoethyl cyclobutane 1 carboxylic acid hydrochloride chemical structure

1 2 Aminoethyl cyclobutane 1 carboxylic acid hydrochloride

CAS: 2095192-36-0
Formula: C₇H₁₄ClNO₂
MW: 179.64 g/mol

VQ-048493

Reference Standard

1 3 Bromo 5 chlorophenyl 2 2 2 trifluoroethan 1 one chemical structure

1 3 Bromo 5 chlorophenyl 2 2 2 trifluoroethan 1 one

CAS: 1655515-91-5
Formula: C₈H₃BrClF₃O
MW: 287.46 g/mol

VQ-037358

Reference Standard

1 4 Chlorothiophen 2 yl ethan 1 one chemical structure

1 4 Chlorothiophen 2 yl ethan 1 one

CAS: 34730-20-6
Formula: C₆H₅ClOS
MW: 160.62 g/mol

VQ-041963

Reference Standard

1 Benzyl 4 methyl 2 phenylpiperazine chemical structure

1 Benzyl 4 methyl 2 phenylpiperazine

CAS: 23174-98-3
Formula: C₁₈H₂₂N₂
MW: 266.4 g/mol

VQ-031951

Reference Standard

1 Benzylpiperidin 4 yl 1 1 biphenyl 2 ylcarbamate chemical structure

1 Benzylpiperidin 4 yl 1 1 biphenyl 2 ylcarbamate

CAS: 171723-80-1
Formula: C₂₅H₂₆N₂O₂
MW: 386.5 g/mol

VQ-033520

Reference Standard

1 Bromo 3 4 ethoxybenzyl benzene chemical structure

1 Bromo 3 4 ethoxybenzyl benzene

CAS: 898538-17-5
Formula: C₁₅H₁₅BrO
MW: 291.18 g/mol

VQ-025176

Reference Standard

1 Butyl 3 4 phenoxyphenyl 1h pyrazolo 3 4 d pyrimidin 4 amine chemical structure

1 Butyl 3 4 phenoxyphenyl 1h pyrazolo 3 4 d pyrimidin 4 amine

CAS: 2213398-77-5
Formula: C₂₁H₂₁N₅O
MW: 359.4 g/mol

VQ-048607

Reference Standard

1 Chloro 2 isocyanato 4 trifluoromethyl benzene chemical structure

1 Chloro 2 isocyanato 4 trifluoromethyl benzene

CAS: 50528-86-4
Formula: C₈H₃ClF₃NO
MW: 221.56 g/mol

VQ-042238

Reference Standard

1 Chloro 3 4 2 isopropoxyethoxy methyl phenoxy propan 2 ol chemical structure

1 Chloro 3 4 2 isopropoxyethoxy methyl phenoxy propan 2 ol

CAS: 704200-67-9
Formula: C₁₅H₂₃ClO₄
MW: 302.79 g/mol

VQ-044039

Reference Standard

1 Isopropyl 3 4 phenoxyphenyl 1h pyrazolo 3 4 d pyrimidin 4 amine chemical structure

1 Isopropyl 3 4 phenoxyphenyl 1h pyrazolo 3 4 d pyrimidin 4 amine

CAS: 2803461-05-2
Formula: C₂₀H₁₉N₅O
MW: 345.4 g/mol

VQ-048606

Reference Standard

1 Mercaptomethyl cyclopropaneacetonitrile chemical structure

1 Mercaptomethyl cyclopropaneacetonitrile

CAS: 866923-64-0
Formula: C₆H₉NS
MW: 127.21 g/mol

VQ-038491

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