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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

Drospirenone Impurity 3 chemical structure

Drospirenone Impurity 3

CAS: 863329-69-5
Formula: C₂₅H₃₅BrO₄
MW: 479.4 g/mol

VQ-030322

Reference Standard

Drospirenone Impurity 4 chemical structure

Drospirenone Impurity 4

CAS: 82543-14-4
Formula: C₂₅H₃₆O₄
MW: 400.5 g/mol

VQ-036840

Reference Standard

Drospirenone-d4 chemical structure

Drospirenone-d4

CAS: 2376035-94-6
Formula: C₂₄H₃₀O₃
MW: 370.5 g/mol

VQ-030325

Reference Standard

Drotaveraldine chemical structure

CAS: 54088-62-9
Formula: C₂₄H₂₉NO₅
MW: 411.5 g/mol

VQ-022463

Reference Standard

Drotaverine chemical structure

CAS: 14009-24-6
Formula: C₂₄H₃₁NO₄
MW: 397.5 g/mol

VQ-045238

Reference Standard

Drotaverine Amine Impurity chemical structure

Drotaverine Amine Impurity

CAS: 61381-04-2
Formula: C₁₂H₁₉NO₂
MW: 209.28 g/mol

VQ-030326

Reference Standard

Droxidopa chemical structure

CAS: 23651-95-8
Formula: C₉H₁₁NO₅
MW: 213.19 g/mol

VQ-025426

Reference Standard

Droxidopa Amine

Droxidopa Amine

CAS: 55637-52-0
Formula: C₂₃H₂₃NO₅
MW: 393.4 g/mol

VQ-025429

Reference Standard

Droxidopa BBC Impurity (HCl salt) chemical structure

Droxidopa BBC Impurity (HCl salt)

CAS: 1021462-91-8
Formula: C₂₅H₂₄Cl₂N₂O₂
MW: 455.4 g/mol

VQ-025433

Reference Standard

Droxidopa Enantiomer Impurity chemical structure

Droxidopa Enantiomer Impurity

CAS: 51829-99-3
Formula: C₉H₁₁NO₅
MW: 213.19 g/mol

VQ-025434

Reference Standard

Droxidopa Impurity 22 chemical structure

Droxidopa Impurity 22

CAS: 56672-56-1
Formula: C₁₀H₁₁NO₅
MW: 225.2 g/mol

VQ-030328

Reference Standard

Duborimycin chemical structure

CAS: 28008-55-1
Formula: C₂₇H₃₁NO₁₀
MW: 529.5 g/mol

VQ-036586

Reference Standard

Duloxetine chemical structure

CAS: 116539-59-4
Formula: C₁₈H₁₉NOS
MW: 297.4 g/mol

VQ-007441

Reference Standard

Duloxetine 2-Naphthalenol Impurity chemical structure

Duloxetine 2-Naphthalenol Impurity

CAS: 1346599-09-4
Formula: C₁₈H₁₉NOS
MW: 297.4 g/mol

VQ-025446

Reference Standard

Duloxetine Chloro Impurity chemical structure

Duloxetine Chloro Impurity

CAS: 1104890-93-8
Formula: C₁₇H₁₅ClOS
MW: 302.8 g/mol

VQ-036852

Reference Standard

Duloxetine D5

CAS: 1276197-52-4
Formula: C₁₈H₁₄D₅NOS
MW: 302.5 g/mol

VQ-044065

Reference Standard

Duloxetine EP Impurity A chemical structure

Duloxetine EP Impurity A

CAS: 910138-96-4
Formula: C₁₈H₂₀ClNOS
MW: 333.9 g/mol

VQ-025435

Reference Standard

Duloxetine EP Impurity B chemical structure

Duloxetine EP Impurity B

CAS: 116539-55-0
Formula: C₈H₁₃NOS
MW: 171.26 g/mol

VQ-025436

Reference Standard

Duloxetine EP Impurity C (Freebase) chemical structure

Duloxetine EP Impurity C (Freebase)

CAS: 949095-98-1
Formula: C₁₈H₁₉NOS
MW: 297.4 g/mol

In stock

Reference Standard

Duloxetine EP Impurity C (Hydrobromide Salt) chemical structure

Duloxetine EP Impurity C (Hydrobromide Salt)

CAS: 949096-01-9
Formula: C₁₈H₂₀BrNOS
MW: 378.3 g/mol

VQ-006344

Reference Standard

Duloxetine EP Impurity C (Hydrochloride Salt) chemical structure

Duloxetine EP Impurity C (Hydrochloride Salt)

CAS: 953028-76-7
Formula: C₁₈H₂₀ClNOS
MW: 333.9 g/mol

VQ-006345

Reference Standard

Duloxetine EP Impurity D chemical structure

Duloxetine EP Impurity D

CAS: 90-15-3
Formula: C₁₀H₈O
MW: 144.17 g/mol

In stock

Reference Standard

Duloxetine EP Impurity E chemical structure

Duloxetine EP Impurity E

CAS: 1033803-59-6
Formula: C₁₈H₁₉NOS
MW: 297.4 g/mol

VQ-025437

Reference Standard

Duloxetine EP Impurity F chemical structure

Duloxetine EP Impurity F

CAS: 959392-22-4
Formula: C₁₈H₁₉NOS
MW: 297.4 g/mol

VQ-006347

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