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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

Anastrozole Monoacid Monoamide Impurity chemical structure

Anastrozole Monoacid Monoamide Impurity

CAS: 2469244-33-3
Formula: C₁₇H₂₂N₄O₃
MW: 330.4 g/mol

VQ-004387

Reference Standard

Anastrozole Monoacid Mononitrile Impurity

Anastrozole Monoacid Mononitrile Impurity

CAS: 1338800-82-0
Formula: C₁₇H₂₀N₄O₂
MW: 312.37 g/mol

In stock

Reference Standard

Anastrozole Monoamide Mononitrile Impurity chemical structure

Anastrozole Monoamide Mononitrile Impurity

CAS: 120512-03-0
Formula: C₁₇H₂₁N₅O
MW: 311.4 g/mol

In stock

Reference Standard

Anastrozole WS chemical structure

CAS: 120511-73-1
Formula: C₁₇H₁₉N₅
MW: 293.4 g/mol

In stock

Reference Standard

Anastrozole-d12 chemical structure

Anastrozole-d12

CAS: 120512-32-5
Formula: C₁₇H₁₉N₅
MW: 305.44 g/mol

VQ-024299

Reference Standard

Anastrozole-d3 Dimer Impurity chemical structure

Anastrozole-d3 Dimer Impurity

CAS: 1329809-14-4
Formula: C₃₀H₃₁N₉
MW: 520.6 g/mol

VQ-043375

Reference Standard

Androst-4-ene-3,6,17-trione chemical structure

Androst-4-ene-3,6,17-trione

CAS: 2243-06-3
Formula: C₁₉H₂₄O₃
MW: 300.4 g/mol

VQ-034148

Reference Standard

Androst-5-ene-3-acetyl-17-ketal chemical structure

Androst-5-ene-3-acetyl-17-ketal

CAS: 17921-59-4
Formula: C₂₃H₃₄O₄
MW: 374.5 g/mol

VQ-035108

Reference Standard

Androst-5-ene-3,17-diol, 3,17-di-(2E)-2-hexenoate, (3β,17β)

Androst-5-ene-3,17-diol, 3,17-di-(2E)-2-hexenoate, (3β,17β)

CAS: 1372939-79-1
Formula: C₃₀H₄₄O₄
MW: 468.32 g/mol

VQ-044375

Reference Standard

Androst-5-ene-3,17-diol, 3,17-di-4-pentenoate

Androst-5-ene-3,17-diol, 3,17-di-4-pentenoate

CAS: 1372939-73-5
Formula: C₂₉H₄₂O₄
MW: 454.7 g/mol

VQ-044374

Reference Standard

Androsta-1,4,6-triene-3,17-dione chemical structure

Androsta-1,4,6-triene-3,17-dione

CAS: 633-35-2
Formula: C₁₉H₂₂O₂
MW: 282.4 g/mol

VQ-032453

Reference Standard

Androsta-3,5-dien-17-one chemical structure

Androsta-3,5-dien-17-one

CAS: 1912-63-6
Formula: C₁₉H₂₆O
MW: 270.4 g/mol

VQ-021384

Reference Standard

Androsta-3,5-dien-17-one, 3-(acetyloxy) chemical structure

Androsta-3,5-dien-17-one, 3-(acetyloxy)

CAS: 4968-05-2
Formula: C₂₁H₂₈O₃
MW: 328.4 g/mol

VQ-044524

Reference Standard

Androsta-3,5,16-trien-17-ol Trifluoromethanesulfonate chemical structure

Androsta-3,5,16-trien-17-ol Trifluoromethanesulfonate

CAS: 154229-36-4
Formula: C₂₀H₂₅F₃O₃S
MW: 402.5 g/mol

VQ-028984

Reference Standard

Androsta-4,8-diene-3,17-dione chemical structure

Androsta-4,8-diene-3,17-dione

CAS: 68539-12-8
Formula: C₁₉H₂₄O₂
MW: 284.4 g/mol

VQ-043533

Reference Standard

Androsta-4,8(14)-diene-3,17-dione chemical structure

Androsta-4,8(14)-diene-3,17-dione

CAS: 17305-49-6
Formula: C₁₉H₂₄O₂
MW: 284.4 g/mol

VQ-043589

Reference Standard

Androstanolone Heptanoate chemical structure

Androstanolone Heptanoate

CAS: 33776-88-4
Formula: C₂₆H₄₂O₃
MW: 402.6 g/mol

VQ-043591

Reference Standard

Androstenediol chemical structure

CAS: 521-17-5
Formula: C₁₉H₃₀O₂
MW: 290.4 g/mol

In stock

Reference Standard

Androstenone chemical structure

CAS: 18339-16-7
Formula: C₁₉H₂₈O
MW: 272.4 g/mol

VQ-047405

Reference Standard

Androstenone Hydrazone chemical structure

Androstenone Hydrazone

CAS: 63015-10-1
Formula: C₁₉H₃₀N₂O
MW: 302.5 g/mol

VQ-028985

Reference Standard

Anecortave acetate chemical structure

Anecortave acetate

CAS: 7753-60-8
Formula: C₂₃H₃₀O₅
MW: 386.5 g/mol

VQ-022802

Reference Standard

Angiotensin II Acetate chemical structure

Angiotensin II Acetate

CAS: 32044-01-2
Formula: C₅₂H₇₅N₁₃O₁₄
MW: 1106.2 g/mol

VQ-051732

Reference Standard

Angustifoline chemical structure

CAS: 550-43-6
Formula: C₁₄H₂₂N₂O
MW: 234.34 g/mol

VQ-027294

Reference Standard

Anhydro Dihydro Artemisinin chemical structure

Anhydro Dihydro Artemisinin

CAS: 82596-30-3
Formula: C₁₅H₂₂O₄
MW: 266.33 g/mol

VQ-020833

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