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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.

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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

Toremifene Impurity-C (Z Isomer) chemical structure

Toremifene Impurity-C (Z Isomer)

CAS: 89778-26-7
Formula: C₂₆H₂₈ClNO
MW: 406 g/mol

In stock

Reference Standard

Toremifene N-Oxide chemical structure

Toremifene N-Oxide

CAS: 163130-29-8
Formula: C₂₆H₂₈ClNO₂
MW: 422 g/mol

VQ-042620

Reference Standard

Torsemide carboxylic acid chemical structure

Torsemide carboxylic acid

CAS: 113844-99-8
Formula: C₁₆H₁₈N₄O₅S
MW: 378.4 g/mol

VQ-034369

Reference Standard

Torsemide N-Oxide chemical structure

Torsemide N-Oxide

CAS: 58154-83-9
Formula: C₁₆H₂₀N₄O₄S
MW: 364.4 g/mol

VQ-028469

Reference Standard

Torsemide-d7 chemical structure

CAS: 1189375-06-1
Formula: C₁₆H₂₀N₄O₃S
MW: 355.5 g/mol

VQ-042627

Reference Standard

Tovorafenib chemical structure

CAS: 1096708-71-2
Formula: C₁₇H₁₂Cl₂F₃N₇O₂S
MW: 506.3 g/mol

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Reference Standard

Tovorafenib Acetyl Thiazole Impurity chemical structure

Tovorafenib Acetyl Thiazole Impurity

CAS: 1095825-46-9
Formula: C₁₂H₇ClF₃N₃O₂S
MW: 349.72 g/mol

VQ-042629

Reference Standard

Toxaphene chemical structure

CAS: 8001-35-2
Formula: C₁₀H₈Cl₈
MW: 411.8 g/mol

VQ-043685

Reference Standard

Toxaphene Impurity 1 chemical structure

Toxaphene Impurity 1

CAS: 142534-71-2
Formula: C₁₀H₁₀Cl₈
MW: 413.8 g/mol

VQ-045208

Reference Standard

Toxaphene Impurity 3 chemical structure

Toxaphene Impurity 3

CAS: 154159-06-5
Formula: C₁₀H₉Cl₉
MW: 448.2 g/mol

VQ-045207

Reference Standard

Toxopyrimidine chemical structure

CAS: 73-67-6
Formula: C₆H₉N₃O
MW: 139.16 g/mol

VQ-027102

Reference Standard

Trabectedin chemical structure

CAS: 114899-77-3
Formula: C₃₉H₄₃N₃O₁₁S
MW: 761.8 g/mol

VQ-034371

Reference Standard

Trabectedin impurity A chemical structure

Trabectedin impurity A

CAS: 493024-42-3
Formula: C₃₇H₄₁N₃O₁₀S
MW: 719.8 g/mol

VQ-034372

Reference Standard

Trabectedin impurity B (sulfoxide) chemical structure

Trabectedin impurity B (sulfoxide)

CAS: 631920-73-5
Formula: C₃₉H₄₃N₃O₁₂S
MW: 777.8 g/mol

VQ-034373

Reference Standard

Trabectedin impurity E (14-Keto) chemical structure

Trabectedin impurity E (14-Keto)

CAS: 1376626-08-2
Formula: C₃₉H₄₁N₃O₁₁S
MW: 759.8 g/mol

VQ-034375

Reference Standard

Trabectedin impurity F (14-des hydroxy) chemical structure

Trabectedin impurity F (14-des hydroxy)

CAS: 114899-28-4
Formula: C₃₉H₄₃N₃O₁₀S
MW: 745.8 g/mol

VQ-042635

Reference Standard

Tramadol chemical structure

CAS: 27203-92-5
Formula: C₁₆H₂₅NO₂
MW: 263.37 g/mol

VQ-007811

Reference Standard

Tramadol EP Impurity A chemical structure

Tramadol EP Impurity A

CAS: 152538-36-8
Formula: C₁₆H₂₅NO₂
MW: 263.37 g/mol

In stock

Reference Standard

Tramadol EP Impurity A (Hydrochloride Salt) chemical structure

Tramadol EP Impurity A (Hydrochloride Salt)

CAS: 73806-49-2
Formula: C₁₆H₂₆ClNO₂
MW: 299.83 g/mol

VQ-006742

Reference Standard

Tramadol EP Impurity B chemical structure

Tramadol EP Impurity B

CAS: 66170-32-9
Formula: C₁₆H₂₄ClNO
MW: 281.82 g/mol

VQ-034377

Reference Standard

Tramadol EP Impurity C chemical structure

Tramadol EP Impurity C

CAS: 192384-41-1
Formula: C₁₆H₂₃NO
MW: 245.36 g/mol

VQ-044856

Reference Standard

Tramadol EP Impurity C Hydrochloride chemical structure

Tramadol EP Impurity C Hydrochloride

CAS: 66170-31-8
Formula: C₁₆H₂₄ClNO
MW: 281.82 g/mol

VQ-042637

Reference Standard

Tramadol EP Impurity D chemical structure

Tramadol EP Impurity D

CAS: 73986-53-5
Formula: C₁₅H₂₃NO₂
MW: 249.35 g/mol

VQ-044858

Reference Standard

Tramadol EP Impurity E chemical structure

Tramadol EP Impurity E

CAS: 42036-65-7
Formula: C₉H₁₈ClNO
MW: 191.7 g/mol

VQ-042638

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