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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

Nintedanib Impurity D chemical structure

Nintedanib Impurity D

CAS: 1139455-52-9
Formula: C₃₂H₃₅N₅O₄
MW: 553.7 g/mol

In stock

Reference Standard

Nintedanib Impurity E chemical structure

Nintedanib Impurity E

CAS: 2380229-45-6
Formula: C₃₃H₃₅N₅O₅
MW: 581.7 g/mol

In stock

Reference Standard

Nintedanib Impurity E

Nintedanib Impurity E

CAS: 1610881-60-1
Formula: C₂₉H₃₁N₅O₂
MW: 481.6 g/mol

VQ-043841

Reference Standard

Nintedanib Impurity E (n-1) chemical structure

Nintedanib Impurity E (n-1)

CAS: 1253769-13-9
Formula: C₂₀H₁₇NO₅
MW: 351.4 g/mol

In stock

Reference Standard

Nintedanib Impurity F chemical structure

Nintedanib Impurity F

CAS: 2410284-90-9
Formula: C₅₆H₅₂N₈O₈
MW: 965.1 g/mol

In stock

Reference Standard

Nintedanib Impurity F (Intermediate) chemical structure

Nintedanib Impurity F (Intermediate)

CAS: 2410649-54-4
Formula: C₂₂H₂₆N₆O₆
MW: 470.5 g/mol

In stock

Reference Standard

Nintedanib Methyl Impurity chemical structure

Nintedanib Methyl Impurity

CAS: 2734410-06-9
Formula: C₃₂H₃₅N₅O₄
MW: 553.7 g/mol

In stock

Reference Standard

Nintedanib N-Acetyl Impurity chemical structure

Nintedanib N-Acetyl Impurity

CAS: 2130844-77-6
Formula: C₃₃H₃₅N₅O₅
MW: 581.7 g/mol

VQ-038650

Reference Standard

Nintedanib N-Acyl Ethoxy Enolindole chemical structure

Nintedanib N-Acyl Ethoxy Enolindole

CAS: 1175365-43-1
Formula: C₂₁H₁₉NO₅
MW: 365.4 g/mol

VQ-045342

Reference Standard

Nintedanib N, N-Dimethyl amine impurity chemical structure

Nintedanib N, N-Dimethyl amine impurity

CAS: 2454314-41-9
Formula: C₁₉H₁₈N₂O₃
MW: 322.4 g/mol

VQ-023266

Reference Standard

Nintedanib Piperazine Dimer Acetyl Impurity

Nintedanib Piperazine Dimer Acetyl Impurity

CAS: 2410649-55-5
Formula: C₆₀H₅₆N₈O₁₀
MW: 1049.14 g/mol

VQ-044620

Reference Standard

Nintedanib Piperazinyl-N4-oxide chemical structure

Nintedanib Piperazinyl-N4-oxide

CAS: 3029792-02-4
Formula: C₃₁H₃₃N₅O₅
MW: 555.6 g/mol

VQ-038654

Reference Standard

Niphensamide chemical structure

CAS: 4638-49-7
Formula: C₁₃H₉ClN₂O₄
MW: 292.67 g/mol

VQ-043880

Reference Standard

Niraparib Acid Impurity

Niraparib Acid Impurity

CAS: 2086267-12-9
Formula: C₁₉H₁₉N₃O₂
MW: 321.37 g/mol

VQ-038660

Reference Standard

Niraparib Carboxylic Acid chemical structure

Niraparib Carboxylic Acid

CAS: 1476777-06-6
Formula: C₁₉H₁₉N₃O₂
MW: 321.4 g/mol

VQ-026926

Reference Standard

Niraparib EA Impurity

Niraparib EA Impurity

Formula: C₁₉H₁₈N₄O.ClH
MW: 354.83 g/mol

In stock

Reference Standard

Niraparib EB Impurity

Niraparib EB Impurity

Formula: C₁₉H₁₈N₄O.ClH
MW: 354.83 g/mol

In stock

Reference Standard

Niraparib Impurity EA (n-2)

Niraparib Impurity EA (n-2)

Formula: C₂₅H₂₇N₃O₄
MW: 433.5 g/mol

In stock

Reference Standard

Niraparib Methyl Ester Impurity chemical structure

Niraparib Methyl Ester Impurity

CAS: 2244220-34-4
Formula: C₂₀H₂₁N₃O₂
MW: 335.4 g/mol

VQ-005390

Reference Standard

Nirmatrelvir Impurity 42 chemical structure

Nirmatrelvir Impurity 42

CAS: 2742706-71-2
Formula: C₁₇H₂₅F₃N₂O₄
MW: 378.4 g/mol

VQ-049260

Reference Standard

Nirmatrelvir Methyl Ester chemical structure

Nirmatrelvir Methyl Ester

CAS: 2879641-46-8
Formula: C₂₄H₃₅F₃N₄O₆
MW: 532.6 g/mol

VQ-044313

Reference Standard

Nirogacestat Impurity 1

Nirogacestat Impurity 1

CAS: 2869169-76-4
Formula: C₂₇H₄₃Br₂ClFN₅O
MW: 667.93 g/mol

VQ-038666

Reference Standard

Nirogacestat Impurity 12

Nirogacestat Impurity 12

CAS: 2869169-70-8
Formula: C₂₇H₄₃Br₂ClFN₅O
MW: 667.93 g/mol

VQ-038665

Reference Standard

Nirogacestat Impurity 8

Nirogacestat Impurity 8

CAS: 2869169-64-0
Formula: C₂₇H₄₃Br₂ClFN₅O
MW: 667.93 g/mol

VQ-038664

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