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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.

28,554products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,252 Pharmacopeial Impurities (EP / USP / BP) 4,401 Nitrosamine Impurities 650 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612 Metabolites & Degradation Products 4,146 API Reference Standards 3,493

Reference Standard

Daclatasvir EP Impurity H (Freebase) chemical structure

Daclatasvir EP Impurity H (Freebase)

CAS: 1007882-27-0
Formula: C₂₆H₂₈N₆
MW: 424.5 g/mol

VQ-006314

Reference Standard

Daclatasvir EP Impurity H (tetrahydrochloride) chemical structure

Daclatasvir EP Impurity H (tetrahydrochloride)

CAS: 1009119-83-8
Formula: C₂₆H₃₂Cl₄N₆
MW: 570.4 g/mol

In stock

Reference Standard

Daclatasvir Impurity 4 chemical structure

Daclatasvir Impurity 4

CAS: 1009107-27-0
Formula: C₄₀H₅₀N₈O₆
MW: 738.9 g/mol

VQ-025153

Reference Standard

Daclatasvir Impurity B chemical structure

Daclatasvir Impurity B

CAS: 2226541-13-3
Formula: C₃₅H₄₁N₇O₄
MW: 623.7 g/mol

VQ-036508

Reference Standard

Daclatasvir Impurity C chemical structure

Daclatasvir Impurity C

CAS: 1256385-55-3
Formula: C₂₉H₃₂N₆O₃
MW: 512.6 g/mol

VQ-036507

Reference Standard

Daclatasvir Impurity F chemical structure

Daclatasvir Impurity F

CAS: 2077207-88-4
Formula: C₄₁H₅₂N₈O₆
MW: 752.9 g/mol

VQ-025151

Reference Standard

Daclatasvir Impurity-B chemical structure

Daclatasvir Impurity-B

CAS: 1009117-26-3
Formula: C₄₀H₅₀N₈O₆
MW: 738.9 g/mol

VQ-025155

Reference Standard

Daclatasvir Oxazolidine Impurity chemical structure

Daclatasvir Oxazolidine Impurity

CAS: 1085706-72-4
Formula: C₄₀H₄₉N₇O₇
MW: 739.9 g/mol

VQ-047920

Reference Standard

Daclatasvir RRRR Isomer chemical structure

Daclatasvir RRRR Isomer

CAS: 1417333-58-4
Formula: C₄₀H₅₀N₈O₆
MW: 738.9 g/mol

VQ-022299

Reference Standard

Daclatasvir RRSS Isomer chemical structure

Daclatasvir RRSS Isomer

CAS: 1009117-94-5
Formula: C₄₀H₅₀N₈O₆
MW: 738.9 g/mol

VQ-043691

Reference Standard

Daclatasvir RSSS Isomer chemical structure

Daclatasvir RSSS Isomer

CAS: 1417333-83-5
Formula: C₄₀H₅₀N₈O₆
MW: 738.9 g/mol

VQ-022300

Reference Standard

Daclatasvir SRSS Isomer chemical structure

Daclatasvir SRSS Isomer

CAS: 1009117-28-5
Formula: C₄₀H₅₀N₈O₆
MW: 738.9 g/mol

VQ-025152

Reference Standard

Daclatasvir-d6 chemical structure

CAS: 1801709-41-0
Formula: C₄₀H₅₀N₈O₆
MW: 744.9 g/mol

VQ-030000

Reference Standard

Dacomitinib chemical structure

CAS: 1110813-31-4
Formula: C₂₄H₂₅ClFN₅O₂
MW: 469.9 g/mol

In stock

Reference Standard

Dacomitinib Amide Impurity

Dacomitinib Amide Impurity

CAS: 1456520-25-4
Formula: C₁₈H₂₂N₄O₃
MW: 342.39 g/mol

In stock

Reference Standard

Dacomitinib Desmethyl Impurity chemical structure

Dacomitinib Desmethyl Impurity

CAS: 2468202-15-3
Formula: C₂₃H₂₃ClFN₅O₂
MW: 455.9 g/mol

In stock

Reference Standard

Dacomitinib Z-Isomer

Dacomitinib Z-Isomer

Formula: C₂₄H₂₅ClFN₅O₂
MW: 469.94 g/mol

In stock

Reference Standard

DAF-FM DA (cell permeable) chemical structure

DAF-FM DA (cell permeable)

CAS: 254109-22-3
Formula: C₂₅H₁₈F₂N₂O₇
MW: 496.4 g/mol

VQ-040488

Reference Standard

Daidzein 4'-Beta-D-Glucuronide chemical structure

Daidzein 4'-Beta-D-Glucuronide

CAS: 264236-77-3
Formula: C₂₁H₁₈O₁₀
MW: 430.4 g/mol

VQ-043127

Reference Standard

Daidzein 7-β-D-Glucuronide 4'-Sulfate Disodium Salt chemical structure

Daidzein 7-β-D-Glucuronide 4'-Sulfate Disodium Salt

CAS: 1041134-19-3
Formula: C₂₁H₁₆Na₂O₁₃S
MW: 554.4 g/mol

VQ-043129

Reference Standard

Daidzein-7-O-glucuronide chemical structure

Daidzein-7-O-glucuronide

CAS: 38482-80-3
Formula: C₂₁H₁₈O₁₀
MW: 430.4 g/mol

VQ-043128

Reference Standard

Daidzin chemical structure

CAS: 552-66-9
Formula: C₂₁H₂₀O₉
MW: 416.4 g/mol

VQ-030003

Reference Standard

Dalargin chemical structure

CAS: 81733-79-1
Formula: C₃₅H₅₁N₉O₈
MW: 725.8 g/mol

VQ-030004

Reference Standard

Dalbavancin chemical structure

CAS: 171500-79-1
Formula: C₈₈H₁₀₀Cl₂N₁₀O₂₈
MW: 1816.7 g/mol

VQ-030005

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