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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

Dutasteride-13C6 chemical structure

Dutasteride-13C6

CAS: 1217685-27-2
Formula: C₂₇H₃₀F₆N₂O₂
MW: 534.5 g/mol

VQ-030343

Reference Standard

Dutasteride-d3 chemical structure

CAS: 1131341-46-2
Formula: C₂₇H₃₀F₆N₂O₂
MW: 531.5 g/mol

VQ-030344

Reference Standard

Duvelisib chemical structure

CAS: 1201438-56-3
Formula: C₂₂H₁₇ClN₆O
MW: 416.9 g/mol

VQ-030345

Reference Standard

DXD chemical structure

CAS: 1599440-33-1
Formula: C₂₆H₂₄FN₃O₆
MW: 493.5 g/mol

VQ-030648

Reference Standard

DXD Racemic Standard (Droxidopa) chemical structure

DXD Racemic Standard (Droxidopa)

CAS: 492-46-6
Formula: C₉H₁₁NO₅
MW: 213.19 g/mol

VQ-025430

Reference Standard

Dyclonine chemical structure

CAS: 586-60-7
Formula: C₁₈H₂₇NO₂
MW: 289.4 g/mol

VQ-048116

Reference Standard

Dyclonine Hydrochloride chemical structure

Dyclonine Hydrochloride

CAS: 536-43-6
Formula: C₁₈H₂₈ClNO₂
MW: 325.9 g/mol

VQ-043463

Reference Standard

Dydrogesterone chemical structure

CAS: 152-62-5
Formula: C₂₁H₂₈O₂
MW: 312.4 g/mol

VQ-022469

Reference Standard

Dydrogesterone bis(Ethylene Acetal) chemical structure

Dydrogesterone bis(Ethylene Acetal)

CAS: 5488-51-7
Formula: C₂₅H₃₆O₄
MW: 400.5 g/mol

VQ-030347

Reference Standard

Dydrogesterone EP impurity A chemical structure

Dydrogesterone EP impurity A

CAS: 23035-53-2
Formula: C₂₁H₂₆O₂
MW: 310.4 g/mol

VQ-022470

Reference Standard

Dydrogesterone EP Impurity C chemical structure

Dydrogesterone EP Impurity C

CAS: 246038-13-1
Formula: C₂₁H₂₈O₂
MW: 312.4 g/mol

VQ-022471

Reference Standard

Dydrogesterone impurity 1

Dydrogesterone impurity 1

CAS: 71379-24-3
Formula: C₂₃H₃₂O₃
MW: 356.5 g/mol

VQ-048118

Reference Standard

E-Cinnamylamine Hydrochloride chemical structure

E-Cinnamylamine Hydrochloride

CAS: 17480-08-9
Formula: C₉H₁₂ClN
MW: 169.65 g/mol

VQ-042649

Reference Standard

E-Norgestimate chemical structure

CAS: 107382-52-5
Formula: C₂₃H₃₁NO₃
MW: 369.5 g/mol

VQ-026955

Reference Standard

E,E-Farnesyl Acetone chemical structure

E,E-Farnesyl Acetone

CAS: 1117-52-8
Formula: C₁₈H₃₀O
MW: 262.4 g/mol

VQ-043887

Reference Standard

Ebastine chemical structure

CAS: 90729-43-4
Formula: C₃₂H₃₉NO₂
MW: 469.7 g/mol

VQ-022472

Reference Standard

Ebastine EP Impurity B chemical structure

Ebastine EP Impurity B

CAS: 943-27-1
Formula: C₁₂H₁₆O
MW: 176.25 g/mol

VQ-022473

Reference Standard

Ebastine EP Impurity C chemical structure

Ebastine EP Impurity C

CAS: 58258-01-8
Formula: C₁₈H₂₁NO
MW: 267.4 g/mol

VQ-022474

Reference Standard

Ebastine EP Impurity C (HCl) chemical structure

Ebastine EP Impurity C (HCl)

CAS: 65214-86-0
Formula: C₁₈H₂₂ClNO
MW: 303.8 g/mol

VQ-030350

Reference Standard

Ebastine EP Impurity D chemical structure

Ebastine EP Impurity D

CAS: 97928-18-2
Formula: C₁₉H₂₉NO₂
MW: 303.4 g/mol

VQ-022475

Reference Standard

Ebastine EP Impurity E chemical structure

Ebastine EP Impurity E

CAS: 1312211-93-0
Formula: C₃₃H₄₁NO₂
MW: 483.7 g/mol

VQ-025456

Reference Standard

Ebastine EP impurity F chemical structure

Ebastine EP impurity F

CAS: 1429071-63-5
Formula: C₃₂H₃₉NO₃
MW: 485.7 g/mol

VQ-025457

Reference Standard

Ebastine EP Impurity F chemical structure

Ebastine EP Impurity F

CAS: 1256285-71-8
Formula: C₃₂H₃₉NO₃
MW: 485.7 g/mol

VQ-036865

Reference Standard

Ebastine EP Impurity G chemical structure

Ebastine EP Impurity G

CAS: 1429071-65-7
Formula: C₃₂H₃₉NO₃
MW: 485.7 g/mol

VQ-022476

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