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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

Dopamine chemical structure

CAS: 51-61-6
Formula: C₈H₁₁NO₂
MW: 153.18 g/mol

VQ-022433

Reference Standard

Dopamine 3-O-Sulfate chemical structure

Dopamine 3-O-Sulfate

CAS: 51317-41-0
Formula: C₈H₁₁NO₅S
MW: 233.24 g/mol

VQ-036790

Reference Standard

Dopamine 4-O-Sulfate chemical structure

Dopamine 4-O-Sulfate

CAS: 38339-02-5
Formula: C₈H₁₁NO₅S
MW: 233.24 g/mol

VQ-036789

Reference Standard

Dopamine EP Impurity A chemical structure

Dopamine EP Impurity A

CAS: 3213-30-7
Formula: C₉H₁₃NO₂
MW: 167.2 g/mol

VQ-025377

Reference Standard

Dopamine EP Impurity A chemical structure

Dopamine EP Impurity A

CAS: 645-33-0
Formula: C₉H₁₄ClNO₂
MW: 203.66 g/mol

VQ-030283

Reference Standard

Dopamine EP Impurity B (Freebase) chemical structure

Dopamine EP Impurity B (Freebase)

CAS: 554-52-9
Formula: C₉H₁₃NO₂
MW: 167.2 g/mol

VQ-006340

Reference Standard

Dopamine EP Impurity B (Hydrochloride) chemical structure

Dopamine EP Impurity B (Hydrochloride)

CAS: 1477-68-5
Formula: C₉H₁₄ClNO₂
MW: 203.66 g/mol

In stock

Reference Standard

Dopamine EP Impurity C chemical structure

Dopamine EP Impurity C

CAS: 120-20-7
Formula: C₁₀H₁₅NO₂
MW: 181.23 g/mol

In stock

Reference Standard

Dopamine Impurity 1 chemical structure

Dopamine Impurity 1

CAS: 22568-51-0
Formula: C₉H₉NO₄
MW: 195.17 g/mol

VQ-048082

Reference Standard

Dopamine Impurity 2 chemical structure

Dopamine Impurity 2

CAS: 95413-92-6
Formula: C₁₀H₁₅Cl₂NO₂
MW: 252.13 g/mol

VQ-036791

Reference Standard

Dopamine Impurity 4

Dopamine Impurity 4

CAS: 7236-38-6
Formula: C₁₈H₂₃NO₄
MW: 317.39 g/mol

VQ-036792

Reference Standard

Dopamine-d3 Hydrochloride chemical structure

Dopamine-d3 Hydrochloride

CAS: 53587-30-7
Formula: C₈H₁₂ClNO₂
MW: 192.66 g/mol

VQ-036795

Reference Standard

Dopamine-d4 Hydrochloride chemical structure

Dopamine-d4 Hydrochloride

CAS: 203633-19-6
Formula: C₈H₁₂ClNO₂
MW: 193.66 g/mol

VQ-036794

Reference Standard

Dopaquinone chemical structure

CAS: 25520-73-4
Formula: C₉H₉NO₄
MW: 195.17 g/mol

VQ-039706

Reference Standard

Doramectin chemical structure

CAS: 117704-25-3
Formula: C₅₀H₇₄O₁₄
MW: 899.1 g/mol

VQ-030288

Reference Standard

Doravirine chemical structure

CAS: 1338225-97-0
Formula: C₁₇H₁₁ClF₃N₅O₃
MW: 425.7 g/mol

VQ-025378

Reference Standard

Doravirine Amide Impurity chemical structure

Doravirine Amide Impurity

CAS: 2054541-28-3
Formula: C₁₇H₁₃ClF₃N₅O₄
MW: 443.8 g/mol

VQ-028968

Reference Standard

Doravirine Dimer Impurity (Bis-alkylated impurity) chemical structure

Doravirine Dimer Impurity (Bis-alkylated impurity)

CAS: 2054541-33-0
Formula: C₂₁H₁₆ClF₃N₈O₄
MW: 536.8 g/mol

VQ-045309

Reference Standard

Doravirine Pyridone Impurity (DOR-VI) chemical structure

Doravirine Pyridone Impurity (DOR-VI)

CAS: 1155846-86-8
Formula: C₁₃H₆ClF₃N₂O₂
MW: 314.64 g/mol

VQ-045310

Reference Standard

Doripenem chemical structure

CAS: 148016-81-3
Formula: C₁₅H₂₄N₄O₆S₂
MW: 420.5 g/mol

VQ-030289

Reference Standard

Doripenem Impurity 2 chemical structure

Doripenem Impurity 2

CAS: 1973411-88-9
Formula: C₁₉H₃₂N₄O₆S₂
MW: 476.6 g/mol

VQ-036796

Reference Standard

Doripenem Impurity 5

Doripenem Impurity 5

CAS: 2220995-13-9
Formula: C₁₅H₂₆N₄O₇S₂
MW: 438.52 g/mol

VQ-036797

Reference Standard

Doripenem monohydrate chemical structure

Doripenem monohydrate

CAS: 364622-82-2
Formula: C₁₅H₂₆N₄O₇S₂
MW: 438.5 g/mol

VQ-030290

Reference Standard

Doristerol chemical structure

CAS: 566-99-4
Formula: C₂₇H₄₆O
MW: 386.7 g/mol

VQ-036282

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