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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

Rebaudioside M chemical structure

CAS: 1220616-44-3
Formula: C₅₆H₉₀O₃₃
MW: 1291.3 g/mol

VQ-041855

Reference Standard

Rebaudioside N chemical structure

CAS: 1220616-46-5
Formula: C₅₆H₉₀O₃₂
MW: 1275.3 g/mol

VQ-040385

Reference Standard

Reboxetine Mesylate chemical structure

Reboxetine Mesylate

CAS: 98769-84-7
Formula: C₂₀H₂₇NO₆S
MW: 409.5 g/mol

VQ-034891

Reference Standard

Reduced Haloperidol chemical structure

Reduced Haloperidol

CAS: 34104-67-1
Formula: C₂₁H₂₅ClFNO₂
MW: 377.9 g/mol

VQ-031049

Reference Standard

Regadenoson chemical structure

CAS: 313348-27-5
Formula: C₁₅H₁₈N₈O₅
MW: 390.35 g/mol

VQ-033479

Reference Standard

Regadenoson Impurity A chemical structure

Regadenoson Impurity A

CAS: 313348-16-2
Formula: C₁₆H₁₉N₇O₆
MW: 405.37 g/mol

VQ-033483

Reference Standard

Regadenoson Impurity C chemical structure

Regadenoson Impurity C

CAS: 1702334-23-3
Formula: C₁₀H₁₀N₈O
MW: 258.24 g/mol

VQ-033482

Reference Standard

Regorafenib chemical structure

CAS: 755037-03-7
Formula: C₂₁H₁₅ClF₄N₄O₃
MW: 482.8 g/mol

VQ-007701

Reference Standard

Regorafenib Chloro Trifluoro Aniline Impurity chemical structure

Regorafenib Chloro Trifluoro Aniline Impurity

CAS: 320-51-4
Formula: C₇H₅ClF₃N
MW: 195.57 g/mol

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Reference Standard

Regorafenib Desmethyl Impurity chemical structure

Regorafenib Desmethyl Impurity

CAS: 1343498-72-5
Formula: C₂₀H₁₃ClF₄N₄O₃
MW: 468.8 g/mol

In stock

Reference Standard

Regorafenib Dimer Impurity chemical structure

Regorafenib Dimer Impurity

CAS: 2438857-80-6
Formula: C₂₇H₂₂F₂N₆O₅
MW: 548.5 g/mol

In stock

Reference Standard

Regorafenib EP Impurity B chemical structure

Regorafenib EP Impurity B

CAS: 2141961-84-2
Formula: C₁₅H₁₄FN₃O₃
MW: 303.29 g/mol

VQ-023619

Reference Standard

Regorafenib Impurity A chemical structure

Regorafenib Impurity A

CAS: 757251-39-1
Formula: C₁₃H₁₂FN₃O₂
MW: 261.25 g/mol

In stock

Reference Standard

Regorafenib Impurity C chemical structure

Regorafenib Impurity C

CAS: 1855006-12-0
Formula: C₂₀H₁₈FN₅O₃
MW: 395.4 g/mol

In stock

Reference Standard

Regorafenib Impurity E chemical structure

Regorafenib Impurity E

CAS: 2098799-13-2
Formula: C₃₅H₂₃Cl₂F₇N₆O₅
MW: 811.5 g/mol

In stock

Reference Standard

Regorafenib Impurity V chemical structure

Regorafenib Impurity V

CAS: 2188236-16-8
Formula: C₂₁H₁₆F₄N₄O₃
MW: 448.4 g/mol

In stock

Reference Standard

Regorafenib Monohydrate chemical structure

Regorafenib Monohydrate

CAS: 1019206-88-2
Formula: C₂₁H₁₇ClF₄N₄O₄
MW: 500.8 g/mol

In stock

Reference Standard

Regorafenib N-Oxide chemical structure

Regorafenib N-Oxide

CAS: 835621-11-9
Formula: C₂₁H₁₅ClF₄N₄O₄
MW: 498.8 g/mol

In stock

Reference Standard

Regorafenib N-Oxide-d3 chemical structure

Regorafenib N-Oxide-d3

CAS: 1333489-03-4
Formula: C₂₁H₁₅ClF₄N₄O₄
MW: 501.8 g/mol

VQ-044713

Reference Standard

Regorafenib-13C-D3 chemical structure

Regorafenib-13C-D3

CAS: 2126178-55-8
Formula: C₂₁H₁₅ClF₄N₄O₃
MW: 486.8 g/mol

VQ-041858

Reference Standard

Regorafenib-d3 chemical structure

CAS: 1255386-16-3
Formula: C₂₁H₁₅ClF₄N₄O₃
MW: 485.8 g/mol

VQ-033485

Reference Standard

Rehmaionoside A chemical structure

Rehmaionoside A

CAS: 104112-06-3
Formula: C₁₉H₃₄O₈
MW: 390.5 g/mol

VQ-030579

Reference Standard

Rehmaionoside B chemical structure

Rehmaionoside B

CAS: 104056-83-9
Formula: C₁₉H₃₄O₈
MW: 390.5 g/mol

VQ-030580

Reference Standard

Rel - Fenoterol EP Impurity A chemical structure

Rel - Fenoterol EP Impurity A

CAS: 107878-38-6
Formula: C₃₄H₄₂N₂O₈
MW: 606.7 g/mol

VQ-025761

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