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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

Ambroxol Impurity B chemical structure

Ambroxol Impurity B

CAS: 18683-95-9
Formula: C₁₄H₁₈Br₂N₂O
MW: 390.11 g/mol

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Reference Standard

Ambroxol Impurity B (Hydrochloride) chemical structure

Ambroxol Impurity B (Hydrochloride)

CAS: 15942-08-2
Formula: C₁₄H₁₉Br₂ClN₂O
MW: 426.57 g/mol

VQ-004364

Reference Standard

Ambroxol Monobromine chemical structure

Ambroxol Monobromine

CAS: 101900-43-0
Formula: C₁₃H₁₉BrN₂O
MW: 299.21 g/mol

VQ-034779

Reference Standard

Amcinonide chemical structure

CAS: 51022-69-6
Formula: C₂₈H₃₅FO₇
MW: 502.6 g/mol

VQ-024231

Reference Standard

Amfenac keto Impurity chemical structure

Amfenac keto Impurity

CAS: 126849-37-4
Formula: C₁₅H₁₁NO₄
MW: 269.25 g/mol

VQ-004365

Reference Standard

Amfenac Sodium chemical structure

CAS: 61941-56-8
Formula: C₁₅H₁₄NNaO₄
MW: 295.26 g/mol

VQ-029525

Reference Standard

Amfenac Sodium Salt hydrate chemical structure

Amfenac Sodium Salt hydrate

CAS: 61618-27-7
Formula: C₁₅H₁₄NNaO₄
MW: 295.26 g/mol

VQ-034977

Reference Standard

Amido Ethyl Meloxicam chemical structure

Amido Ethyl Meloxicam

CAS: 881399-30-0
Formula: C₁₆H₁₇N₃O₄S₂
MW: 379.5 g/mol

VQ-031774

Reference Standard

Amido Methyl Meloxicam chemical structure

Amido Methyl Meloxicam

CAS: 892395-41-4
Formula: C₁₅H₁₅N₃O₄S₂
MW: 365.4 g/mol

VQ-031773

Reference Standard

Amifostine Disulfide chemical structure

Amifostine Disulfide

CAS: 10027-65-3
Formula: C₁₀H₃₀Cl₄N₄S₂
MW: 412.3 g/mol

VQ-024236

Reference Standard

Amifostine Thiol chemical structure

Amifostine Thiol

CAS: 31098-42-7
Formula: C₅H₁₄N₂S
MW: 134.25 g/mol

VQ-035678

Reference Standard

Amiloride Impurity 1 chemical structure

Amiloride Impurity 1

CAS: 1458-18-0
Formula: C₆H₅Cl₂N₃O₂
MW: 222.03 g/mol

VQ-047381

Reference Standard

Amine Impurity

CAS: 2236586-71-1
Formula: C₁₃H₁₉FN₂ : HCl
MW: 258.77 g/mol

VQ-027491

Reference Standard

Amino Sildenafil chemical structure

Amino Sildenafil

CAS: 319491-68-4
Formula: C₁₈H₂₃N₅O₄S
MW: 405.5 g/mol

VQ-034481

Reference Standard

Aminocaproic Acid Impurity 4 chemical structure

Aminocaproic Acid Impurity 4

CAS: 4006-50-2
Formula: C₁₂H₁₆N₂
MW: 188.27 g/mol

VQ-029105

Reference Standard

Aminocaproic Acid Impurity 5 chemical structure

Aminocaproic Acid Impurity 5

CAS: 4726-93-6
Formula: C₆H₉NO₂
MW: 127.14 g/mol

VQ-035682

Reference Standard

Aminocaproic Acid Trimer Impurity chemical structure

Aminocaproic Acid Trimer Impurity

CAS: 5776-78-3
Formula: C₁₈H₃₅N₃O₄
MW: 357.5 g/mol

VQ-021548

Reference Standard

Aminodantrolene chemical structure

Aminodantrolene

CAS: 14663-28-6
Formula: C₁₄H₁₂N₄O₃
MW: 284.27 g/mol

VQ-030016

Reference Standard

Aminolevulinic Acid Related Compound B chemical structure

Aminolevulinic Acid Related Compound B

CAS: 109258-71-1
Formula: C₁₄H₁₃NO₅
MW: 275.26 g/mol

VQ-035684

Reference Standard

Aminophenylmorpholin-2-one (USP) chemical structure

Aminophenylmorpholin-2-one (USP)

CAS: 1456733-00-8
Formula: C₁₀H₁₂N₂O₂
MW: 192.21 g/mol

VQ-044128

Reference Standard

Amiodarone Impurity 14 chemical structure

Amiodarone Impurity 14

CAS: 159980-56-0
Formula: C₂₀H₁₉IO₃
MW: 434.3 g/mol

VQ-035692

Reference Standard

Amiodarone Impurity 9 chemical structure

Amiodarone Impurity 9

CAS: 318267-28-6
Formula: C₂₅H₃₀INO₄
MW: 535.4 g/mol

VQ-035689

Reference Standard

Amiodarone Methoxy Impurity chemical structure

Amiodarone Methoxy Impurity

CAS: 83790-87-8
Formula: C₂₀H₂₀O₃
MW: 308.4 g/mol

VQ-020786

Reference Standard

Amisulpride Impurity 2 chemical structure

Amisulpride Impurity 2

CAS: 1185257-08-2
Formula: C₁₃H₁₇NO₆S
MW: 315.34 g/mol

VQ-029119

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