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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.

27,990products

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

Tamoxifen Citrate EP Impurity D chemical structure

Tamoxifen Citrate EP Impurity D

CAS: 197251-11-9
Formula: C₂₅H₂₇NO
MW: 357.5 g/mol

VQ-034033

Reference Standard

Tamoxifen Citrate EP Impurity E chemical structure

Tamoxifen Citrate EP Impurity E

CAS: 2734357-02-7
Formula: C₂₆H₂₉NO
MW: 371.5 g/mol

VQ-028197

Reference Standard

Tamoxifen Citrate EP Impurity G chemical structure

Tamoxifen Citrate EP Impurity G

CAS: 68047-07-4
Formula: C₂₀H₂₅NO₂
MW: 311.4 g/mol

VQ-028194

Reference Standard

Tamoxifen Citrate EP Impurity H chemical structure

Tamoxifen Citrate EP Impurity H

CAS: 809285-09-4
Formula: C₄₃H₄₈N₂O₂
MW: 624.9 g/mol

VQ-034035

Reference Standard

Tamoxifen Dimer chemical structure

Tamoxifen Dimer

CAS: 1346606-51-6
Formula: C₄₉H₄₉NO₂
MW: 683.9 g/mol

VQ-034032

Reference Standard

Tamoxifen EP Impurity A chemical structure

Tamoxifen EP Impurity A

CAS: 13002-65-8
Formula: C₂₆H₂₉NO
MW: 371.5 g/mol

VQ-034031

Reference Standard

Tamoxifen EP Impurity A (HCl salt)

Tamoxifen EP Impurity A (HCl salt)

CAS: 66584-36-9
Formula: C₂₆H₂₉NO : HCl
MW: 371.91 g/mol

VQ-028198

Reference Standard

Tamoxifen EP Impurity F (Free Base) chemical structure

Tamoxifen EP Impurity F (Free Base)

CAS: 31750-48-8
Formula: C₂₅H₂₇NO
MW: 357.5 g/mol

VQ-034901

Reference Standard

Tamoxifen N-Oxide chemical structure

Tamoxifen N-Oxide

CAS: 75504-34-6
Formula: C₂₆H₂₉NO₂
MW: 387.5 g/mol

VQ-034034

Reference Standard

Tamoxifen-d3 chemical structure

CAS: 508201-30-7
Formula: C₂₆H₂₉NO
MW: 374.5 g/mol

VQ-042360

Reference Standard

Tamsulosin chemical structure

CAS: 106133-20-4
Formula: C₂₀H₂₈N₂O₅S
MW: 408.5 g/mol

VQ-007776

Reference Standard

Tamsulosin Catechol chemical structure

Tamsulosin Catechol

CAS: 176223-30-6
Formula: C₁₈H₂₄N₂O₅S
MW: 380.5 g/mol

VQ-044195

Reference Standard

Tamsulosin D4

CAS: 1231943-97-7
Formula: C₂₀H₂₄D₄N₂O₅S
MW: 412.54 g/mol

VQ-043737

Reference Standard

Tamsulosin EP Impurity A chemical structure

Tamsulosin EP Impurity A

CAS: 918867-88-6
Formula: C₃₀H₄₀N₂O₇S
MW: 572.7 g/mol

VQ-023832

Reference Standard

Tamsulosin EP Impurity A Hydrochloride chemical structure

Tamsulosin EP Impurity A Hydrochloride

CAS: 2727060-83-3
Formula: C₃₀H₄₁ClN₂O₇S
MW: 609.2 g/mol

VQ-042361

Reference Standard

Tamsulosin EP Impurity B chemical structure

Tamsulosin EP Impurity B

CAS: 112101-81-2
Formula: C₁₀H₁₆N₂O₃S
MW: 244.31 g/mol

VQ-023837

Reference Standard

Tamsulosin EP Impurity B (HCl salt) chemical structure

Tamsulosin EP Impurity B (HCl salt)

CAS: 112101-75-4
Formula: C₁₀H₁₇ClN₂O₃S
MW: 280.77 g/mol

VQ-028199

Reference Standard

Tamsulosin EP Impurity C chemical structure

Tamsulosin EP Impurity C

CAS: 2244986-82-9
Formula: C₁₈H₂₄N₂O₄S
MW: 364.5 g/mol

VQ-028204

Reference Standard

Tamsulosin EP Impurity C Hydrochloride chemical structure

Tamsulosin EP Impurity C Hydrochloride

CAS: 2724727-15-3
Formula: C₁₈H₂₅ClN₂O₄S
MW: 400.9 g/mol

VQ-028200

Reference Standard

Tamsulosin EP Impurity D chemical structure

Tamsulosin EP Impurity D

CAS: 1799280-05-9
Formula: C₁₉H₂₆N₂O₅S
MW: 394.5 g/mol

VQ-034036

Reference Standard

Tamsulosin EP Impurity D Hydrochloride chemical structure

Tamsulosin EP Impurity D Hydrochloride

CAS: 1798904-07-0
Formula: C₁₉H₂₇ClN₂O₅S
MW: 430.9 g/mol

VQ-028849

Reference Standard

Tamsulosin EP Impurity E chemical structure

Tamsulosin EP Impurity E

CAS: 105764-07-6
Formula: C₈H₉NO₄S
MW: 215.23 g/mol

VQ-023833

Reference Standard

Tamsulosin EP Impurity F chemical structure

Tamsulosin EP Impurity F

CAS: 6781-17-5
Formula: C₁₀H₁₅NO₂
MW: 181.23 g/mol

VQ-034037

Reference Standard

Tamsulosin EP Impurity F Hydrochloride chemical structure

Tamsulosin EP Impurity F Hydrochloride

CAS: 1051368-80-9
Formula: C₁₀H₁₆ClNO₂
MW: 217.69 g/mol

VQ-023834

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