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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

Roxadustat Impurity 8 Regio isomer

Roxadustat Impurity 8 Regio isomer

Formula: C₁₈H₁₄ClNO₄
MW: 343.76 g/mol

In stock

Reference Standard

Roxadustat Impurity 9 Stage-1

Roxadustat Impurity 9 Stage-1

Formula: C₁₈H₁₅NO₃
MW: 293.32 g/mol

In stock

Reference Standard

Roxadustat Impurity E

Roxadustat Impurity E

CAS: 1455089-22-1
Formula: C₂₀H₁₈N₂O₅
MW: 366.37 g/mol

VQ-005830

Reference Standard

Roxadustat Impurity- 7 Regioisomer

Roxadustat Impurity- 7 Regioisomer

Formula: C₁₈H₁₅NO₅
MW: 325.32 g/mol

In stock

Reference Standard

Roxadustat Methylglycine Impurity

Roxadustat Methylglycine Impurity

Formula: C₂₀H₁₈N₂O₅
MW: 366.37 g/mol

In stock

Reference Standard

Roxithromycin Impurity - G chemical structure

Roxithromycin Impurity - G

CAS: 425365-64-6
Formula: C₄₂H₇₈N₂O₁₆
MW: 867.1 g/mol

VQ-005833

Reference Standard

RRS Isomer of Trandolapril (Sodium salt)

RRS Isomer of Trandolapril (Sodium salt)

Formula: C₂₄H₃₄N₂O₅.Na
MW: 453.53 g/mol

In stock

Reference Standard

RS-N,N- Dimethyl-3-(1-Naphthalenyloxy)-3-(2-thienyl)-1-propanamine oxalate chemical structure

RS-N,N- Dimethyl-3-(1-Naphthalenyloxy)-3-(2-thienyl)-1-propanamine oxalate

CAS: 116817-12-0
Formula: C₁₉H₂₁NOS
MW: 311.4 g/mol

VQ-030335

Reference Standard

Rubber Oligomer 3 chemical structure

Rubber Oligomer 3

CAS: 2512216-71-4
Formula: C₂₁H₄₀
MW: 292.5 g/mol

VQ-027282

Reference Standard

Rucaparib Carboxylic Acid chemical structure

Rucaparib Carboxylic Acid

CAS: 1577998-89-0
Formula: C₁₈H₁₃FN₂O₃
MW: 324.3 g/mol

VQ-033696

Reference Standard

Rucaparib Cyclopentaindolyl Impurity

Rucaparib Cyclopentaindolyl Impurity

CAS: 2306160-67-6
Formula: C₁₈H₁₅FN₂
MW: 278.3 g/mol

VQ-045428

Reference Standard

Rucaparib Impurity 13 chemical structure

Rucaparib Impurity 13

CAS: 283173-84-2
Formula: C₁₈H₁₃FN₂O₂
MW: 308.3 g/mol

In stock

Reference Standard

Rucaparib Impurity 16 chemical structure

Rucaparib Impurity 16

CAS: 1577983-73-3
Formula: C₁₈H₁₆FN₃O
MW: 309.3 g/mol

In stock

Reference Standard

Rucaparib Impurity I chemical structure

Rucaparib Impurity I

CAS: 1408282-26-7
Formula: C₁₁H₉FN₂O
MW: 204.2 g/mol

In stock

Reference Standard

Rucaparib Impurity II chemical structure

Rucaparib Impurity II

CAS: 283173-80-8
Formula: C₁₁H₈BrFN₂O
MW: 283.1 g/mol

In stock

Reference Standard

Rucaparib Nitrobenzoate Impurity chemical structure

Rucaparib Nitrobenzoate Impurity

CAS: 1305320-70-0
Formula: C₁₂H₁₃FN₂O₄
MW: 268.24 g/mol

VQ-027944

Reference Standard

Rufinamide 2,6-Didesfluoro Impurity chemical structure

Rufinamide 2,6-Didesfluoro Impurity

CAS: 80819-65-4
Formula: C₁₀H₁₀N₄O
MW: 202.21 g/mol

VQ-042040

Reference Standard

Rufinamide Cyano Impurity chemical structure

Rufinamide Cyano Impurity

CAS: 202003-06-3
Formula: C₁₀H₆F₂N₄
MW: 220.18 g/mol

VQ-033700

Reference Standard

Rufinamide Impurity C chemical structure

Rufinamide Impurity C

CAS: 166196-11-8
Formula: C₁₀H₇F₂N₃O₂
MW: 239.18 g/mol

VQ-027946

Reference Standard

Rufinamide-5-Carboxamide chemical structure

Rufinamide-5-Carboxamide

CAS: 1622904-99-7
Formula: C₁₀H₈F₂N₄O
MW: 238.19 g/mol

VQ-033701

Reference Standard

Rupatadine impurity 27 chemical structure

Rupatadine impurity 27

CAS: 2242584-13-8
Formula: C₁₄H₁₇Cl₃N₂
MW: 319.7 g/mol

VQ-033703

Reference Standard

Rupatadine Impurity B chemical structure

Rupatadine Impurity B

CAS: 156523-04-5
Formula: C₂₆H₂₄ClN₃O
MW: 429.9 g/mol

VQ-027949

Reference Standard

Ruscogenin chemical structure

CAS: 472-11-7
Formula: C₂₇H₄₂O₄
MW: 430.6 g/mol

VQ-042043

Reference Standard

Rutin Ethylene Glycol chemical structure

Rutin Ethylene Glycol

CAS: 31511-31-6
Formula: C₃₅H₄₆O₂₀
MW: 786.7 g/mol

VQ-042726

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