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Impurities & Reference Standards

API Impurities

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

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Reference Standard

Oxantel Pamoate Hydrochloride Impurity (Stage-1) chemical structure

Oxantel Pamoate Hydrochloride Impurity (Stage-1)

CAS: 1188263-67-3
Formula: C₉H₂₁ClN₂O₂
MW: 224.73 g/mol

VQ-005451

Reference Standard

Oxantel Pamoate Impurity (Stage-1) chemical structure

Oxantel Pamoate Impurity (Stage-1)

CAS: 150349-36-3
Formula: C₉H₂₀N₂O₂
MW: 188.27 g/mol

In stock

Reference Standard

Oxantel Pamoate Impurity (Stage-3)

Oxantel Pamoate Impurity (Stage-3)

Formula: C₁₈H₂₆N₂O₄
MW: 334.41 g/mol

VQ-005453

Reference Standard

Oxaprozin Bisoxazole Analog chemical structure

Oxaprozin Bisoxazole Analog

CAS: 2806364-75-8
Formula: C₃₂H₂₄N₂O₂
MW: 468.5 g/mol

VQ-032997

Reference Standard

Oxatomide chemical structure

CAS: 60607-34-3
Formula: C₂₇H₃₀N₄O
MW: 426.6 g/mol

VQ-043784

Reference Standard

Oxazolidinone -1,3-Oxazolidone-2-thione chemical structure

Oxazolidinone -1,3-Oxazolidone-2-thione

CAS: 5840-81-3
Formula: C₃H₅NOS
MW: 103.15 g/mol

VQ-039832

Reference Standard

Oxazolidinone Dimer Impurity chemical structure

Oxazolidinone Dimer Impurity

CAS: 914777-33-6
Formula: C₂₁H₂₀F₂O₃
MW: 358.4 g/mol

VQ-037183

Reference Standard

Oxcarbazepine Impurity 15

Oxcarbazepine Impurity 15

CAS: 1360470-12-7
Formula: C₁₈H₁₅NO₃
MW: 293.3 g/mol

VQ-041264

Reference Standard

Oxcarbazepine Impurity B chemical structure

Oxcarbazepine Impurity B

CAS: 4698-11-7
Formula: C₁₅H₁₃NO
MW: 223.27 g/mol

In stock

Reference Standard

Oxcarbazepine O-Propan-1-one chemical structure

Oxcarbazepine O-Propan-1-one

CAS: 186694-22-4
Formula: C₁₈H₁₈N₂O₃
MW: 310.3 g/mol

VQ-023434

Reference Standard

Oxcarbazepine Related Compound C chemical structure

Oxcarbazepine Related Compound C

CAS: 578-95-0
Formula: C₁₃H₉NO
MW: 195.22 g/mol

VQ-005455

Reference Standard

Oxetacaine chemical structure

CAS: 126-27-2
Formula: C₂₈H₄₁N₃O₃
MW: 467.6 g/mol

VQ-023435

Reference Standard

Oxibendazole chemical structure

CAS: 20559-55-1
Formula: C₁₂H₁₅N₃O₃
MW: 249.27 g/mol

VQ-021468

Reference Standard

Oxiconazole Related Compound A chemical structure

Oxiconazole Related Compound A

CAS: 76472-50-9
Formula: C₁₈H₁₃Cl₄N₃O
MW: 429.1 g/mol

VQ-027331

Reference Standard

Oxo Simvastatin chemical structure

Oxo Simvastatin

CAS: 1426939-44-7
Formula: C₂₅H₃₆O₅
MW: 416.5 g/mol

VQ-028044

Reference Standard

Oxo Sotalol Hydrochloride chemical structure

Oxo Sotalol Hydrochloride

CAS: 5576-49-8
Formula: C₁₂H₁₉ClN₂O₃S
MW: 306.81 g/mol

VQ-023791

Reference Standard

Oxociprofloxacin chemical structure

Oxociprofloxacin

CAS: 103237-52-1
Formula: C₁₇H₁₆FN₃O₄
MW: 345.32 g/mol

VQ-036342

Reference Standard

Oxolan-2-ylmethyl 2-[4-(6-chloroquinoxalin-2-yl)oxyphenoxy]propanoate chemical structure

Oxolan-2-ylmethyl 2-[4-(6-chloroquinoxalin-2-yl)oxyphenoxy]propanoate

CAS: 119738-06-6
Formula: C₂₂H₂₁ClN₂O₅
MW: 428.9 g/mol

VQ-040789

Reference Standard

Oxomemazine Impurity 3 chemical structure

Oxomemazine Impurity 3

CAS: 31412-48-3
Formula: C₆H₁₅Cl₂N
MW: 172.09 g/mol

VQ-041275

Reference Standard

Oxypurinol chemical structure

CAS: 2465-59-0
Formula: C₅H₄N₄O₂
MW: 152.11 g/mol

VQ-021498

Reference Standard

Oxytocin Antiparallel Dimer chemical structure

Oxytocin Antiparallel Dimer

CAS: 20054-93-7
Formula: C₈₆H₁₃₂N₂₄O₂₄S₄
MW: 2014.4 g/mol

VQ-023445

Reference Standard

Oxytocin Parallel Dimer chemical structure

Oxytocin Parallel Dimer

CAS: 19645-28-4
Formula: C₈₆H₁₃₂N₂₄O₂₄S₄
MW: 2014.4 g/mol

VQ-023444

Reference Standard

Ozanimod (R)-enantiomer chemical structure

Ozanimod (R)-enantiomer

CAS: 1306760-86-0
Formula: C₂₃H₂₄N₄O₃
MW: 404.5 g/mol

VQ-021301

Reference Standard

Ozanimod Amide Impurity

Ozanimod Amide Impurity

CAS: 1369928-96-0
Formula: C₁₁H₁₂N₂O₂
MW: 204.23 g/mol

VQ-027349

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