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Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

Silodosin carboxylic acid impurity chemical structure

Silodosin carboxylic acid impurity

CAS: 1357252-79-9
Formula: C₂₅H₃₀F₃N₃O₅
MW: 509.5 g/mol

VQ-023756

Reference Standard

Silodosin Carboxylic Acid Impurity 2 chemical structure

Silodosin Carboxylic Acid Impurity 2

CAS: 1431373-77-1
Formula: C₂₅H₃₁F₃N₂O₅
MW: 496.5 g/mol

VQ-042173

Reference Standard

Silodosin Dimer Impurity chemical structure

Silodosin Dimer Impurity

CAS: 1453221-45-8
Formula: C₃₅H₄₁F₆N₃O₆
MW: 713.7 g/mol

VQ-023755

Reference Standard

Silodosin Glucuronide chemical structure

Silodosin Glucuronide

CAS: 879396-70-0
Formula: C₃₁H₄₀F₃N₃O₁₀
MW: 671.7 g/mol

VQ-033844

Reference Standard

Silodosin Impurity 30

Silodosin Impurity 30

CAS: 2077962-88-8
Formula: C₂₅H₃₂F₃N₃O₅
MW: 511.53 g/mol

VQ-042176

Reference Standard

Silodosin Keto Impurity chemical structure

Silodosin Keto Impurity

CAS: 350797-57-8
Formula: C₂₂H₂₂N₂O₃
MW: 362.4 g/mol

VQ-028028

Reference Standard

Silodosin N-Oxide chemical structure

Silodosin N-Oxide

CAS: 2361272-05-9
Formula: C₂₅H₃₂F₃N₃O₅
MW: 511.5 g/mol

VQ-042168

Reference Standard

Silodosin Nitrile Impurity chemical structure

Silodosin Nitrile Impurity

CAS: 885340-13-6
Formula: C₂₅H₃₀F₃N₃O₃
MW: 477.5 g/mol

VQ-023754

Reference Standard

Silodosin-d4 chemical structure

CAS: 1426173-86-5
Formula: C₂₅H₃₂F₃N₃O₄
MW: 499.6 g/mol

VQ-033852

Reference Standard

Silodosin-d6 chemical structure

CAS: 1051374-52-7
Formula: C₂₅H₃₂F₃N₃O₄
MW: 501.6 g/mol

VQ-033853

Reference Standard

Silybin chemical structure

CAS: 36804-17-8
Formula: C₂₅H₂₂O₁₀
MW: 482.4 g/mol

VQ-039080

Reference Standard

Silybin B chemical structure

CAS: 142797-34-0
Formula: C₂₅H₂₂O₁₀
MW: 482.4 g/mol

VQ-033855

Reference Standard

Silychristin chemical structure

CAS: 33889-69-9
Formula: C₂₅H₂₂O₁₀
MW: 482.4 g/mol

VQ-033854

Reference Standard

Silydianin chemical structure

CAS: 29782-68-1
Formula: C₂₅H₂₂O₁₀
MW: 482.4 g/mol

VQ-032717

Reference Standard

Simazine chemical structure

CAS: 122-34-9
Formula: C₇H₁₂ClN₅
MW: 201.66 g/mol

VQ-039528

Reference Standard

Simethicone chemical structure

CAS: 8050-81-5
Formula: C₆H₁₈O₄Si₃
MW: 238.46 g/mol

VQ-028031

Reference Standard

Simvastatin 6-Oxo Isomer chemical structure

Simvastatin 6-Oxo Isomer

CAS: 130468-11-0
Formula: C₂₅H₃₆O₆
MW: 432.5 g/mol

VQ-033861

Reference Standard

Simvastatin Beta-Hydroxy Impurity chemical structure

Simvastatin Beta-Hydroxy Impurity

CAS: 126313-98-2
Formula: C₂₅H₃₈O₆
MW: 434.6 g/mol

VQ-042181

Reference Standard

Simvastatin D6 chemical structure

CAS: 1002347-71-8
Formula: C₂₅H₃₈O₅
MW: 424.6 g/mol

VQ-033864

Reference Standard

Simvastatin EP Impurity A (Sodium salt) chemical structure

Simvastatin EP Impurity A (Sodium salt)

CAS: 101314-97-0
Formula: C₂₅H₃₉NaO₆
MW: 458.6 g/mol

VQ-028032

Reference Standard

Simvastatin EP Impurity B chemical structure

Simvastatin EP Impurity B

CAS: 145576-25-6
Formula: C₂₇H₄₀O₆
MW: 460.6 g/mol

VQ-028033

Reference Standard

Simvastatin EP Impurity C chemical structure

Simvastatin EP Impurity C

CAS: 210980-68-0
Formula: C₂₅H₃₆O₄
MW: 400.5 g/mol

VQ-028034

Reference Standard

Simvastatin EP Impurity D chemical structure

Simvastatin EP Impurity D

CAS: 476305-24-5
Formula: C₅₀H₇₆O₁₀
MW: 837.1 g/mol

VQ-028035

Reference Standard

Simvastatin EP Impurity F chemical structure

Simvastatin EP Impurity F

CAS: 79952-44-6
Formula: C₂₄H₃₆O₅
MW: 404.5 g/mol

VQ-023757

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