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Impurities & Reference Standards

API Impurities

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

14,252products

1,516in stock

COA + SDSwith every lot

Reference Standard

Endo Lurasidone chemical structure

Endo Lurasidone

CAS: 1318074-25-7
Formula: C₂₈H₃₆N₄O₂S
MW: 492.7 g/mol

VQ-026541

Reference Standard

endo-9-Methyl-9-azabicyclo[3.3.1]nonan-3-amine Dihydrochloride chemical structure

endo-9-Methyl-9-azabicyclo[3.3.1]nonan-3-amine Dihydrochloride

CAS: 135906-03-5
Formula: C₉H₂₀Cl₂N₂
MW: 227.17 g/mol

VQ-037561

Reference Standard

Endo-Cis Lurasidone chemical structure

Endo-Cis Lurasidone

CAS: 1318074-20-2
Formula: C₂₈H₃₆N₄O₂S
MW: 492.7 g/mol

VQ-031697

Reference Standard

endo-Gly9a-Vasopressin

endo-Gly9a-Vasopressin

CAS: 77403-94-2
Formula: C₄₈H₆₇N₁₅O₁₄S₂
MW: 1142.3 g/mol

VQ-042832

Reference Standard

Endo-Gly9a-Vasopressin

Endo-Gly9a-Vasopressin

CAS: 114665-05-3
Formula: C₄₈H₆₇N₁₅O₁₄S₂
MW: 1142.28 g/mol

VQ-043345

Reference Standard

Endoxifen E-isomer Hydrochloride chemical structure

Endoxifen E-isomer Hydrochloride

CAS: 1197194-61-8
Formula: C₂₅H₂₈ClNO₂
MW: 409.9 g/mol

VQ-042624

Reference Standard

Endoxifen Impurity 1

Endoxifen Impurity 1

CAS: 1277171-34-2
Formula: C₂₅H₂₇NO₃
MW: 389.49 g/mol

VQ-042622

Reference Standard

Endurobol chemical structure

CAS: 317318-70-0
Formula: C₂₁H₁₈F₃NO₃S₂
MW: 453.5 g/mol

VQ-040652

Reference Standard

Ene Sacubitril

CAS: 2957885-24-2
Formula: C₂₄H₂₇NO₅
MW: 409.47 g/mol

VQ-027963

Reference Standard

Enramycin A

CAS: 34438-27-2
Formula: C₁₀₇H₁₃₈Cl₂N₂₆O₃₁
MW: 2355.3 g/mol

VQ-039435

Reference Standard

Enramycin B

CAS: 34304-21-7
Formula: C₁₀₈H₁₄₀Cl₂N₂₆O₃₁
MW: 2369.3 g/mol

VQ-039440

Reference Standard

Enrofloxacin Butyl Ester Impurity chemical structure

Enrofloxacin Butyl Ester Impurity

CAS: 107884-22-0
Formula: C₂₃H₃₀FN₃O₃
MW: 415.5 g/mol

VQ-030482

Reference Standard

Ensifentrine Amine Impurity chemical structure

Ensifentrine Amine Impurity

CAS: 298680-39-4
Formula: C₂₅H₃₀N₄O₃
MW: 434.5 g/mol

VQ-021218

Reference Standard

Ensifentrine Biuret Impurity chemical structure

Ensifentrine Biuret Impurity

CAS: 3067475-17-3
Formula: C₂₇H₃₂N₆O₅
MW: 520.6 g/mol

VQ-036998

Reference Standard

Ensifentrine Dimer Impurity chemical structure

Ensifentrine Dimer Impurity

CAS: 3067475-16-2
Formula: C₅₁H₅₈N₈O₇
MW: 895.1 g/mol

VQ-030484

Reference Standard

Ensifentrine Impurity 1 chemical structure

Ensifentrine Impurity 1

CAS: 25017-47-4
Formula: C₁₁H₁₆N₂O₃
MW: 224.26 g/mol

In stock

Reference Standard

Ensifentrine Impurity 3 chemical structure

Ensifentrine Impurity 3

CAS: 75535-96-5
Formula: C₁₄H₁₃ClN₂O₃
MW: 292.72 g/mol

In stock

Reference Standard

Ensifentrine Impurity 4 chemical structure

Ensifentrine Impurity 4

CAS: 3046226-91-6
Formula: C₂₅H₃₀N₄O₃
MW: 434.5 g/mol

In stock

Reference Standard

Ensifentrine Impurity 6 chemical structure

Ensifentrine Impurity 6

CAS: 298680-38-3
Formula: C₃₃H₃₂N₄O₅
MW: 564.6 g/mol

VQ-030485

Reference Standard

Ensifentrine pyrimidinetrione Ammonia Salt Impurity

Ensifentrine pyrimidinetrione Ammonia Salt Impurity

CAS: 1338599-32-8
Formula: C₁₄H₁₆N₂O₅.H₃N
MW: 309.32 g/mol

VQ-004887

Reference Standard

Ensifentrine pyrimidinetrione Impurity chemical structure

Ensifentrine pyrimidinetrione Impurity

CAS: 75535-95-4
Formula: C₁₄H₁₆N₂O₅
MW: 292.29 g/mol

In stock

Reference Standard

ent-Aprepitant chemical structure

CAS: 172822-29-6
Formula: C₂₃H₂₁F₇N₄O₃
MW: 534.4 g/mol

VQ-024342

Reference Standard

Ent-Avibactam Sodium chemical structure

Ent-Avibactam Sodium

CAS: 396731-20-7
Formula: C₇H₁₀N₃NaO₆S
MW: 287.23 g/mol

VQ-035873

Reference Standard

Ent-Edoxaban chemical structure

CAS: 1255529-23-7
Formula: C₂₄H₃₀ClN₇O₄S
MW: 548.1 g/mol

VQ-025477

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