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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

Etofenamate chemical structure

CAS: 30544-47-9
Formula: C₁₈H₁₈F₃NO₄
MW: 369.3 g/mol

VQ-022595

Reference Standard

Etofenamate EP Impurity A chemical structure

Etofenamate EP Impurity A

CAS: 530-78-9
Formula: C₁₄H₁₀F₃NO₂
MW: 281.23 g/mol

VQ-022599

Reference Standard

Etofenamate EP Impurity B chemical structure

Etofenamate EP Impurity B

CAS: 67330-25-0
Formula: C₁₈H₁₈F₃NO₂
MW: 337.3 g/mol

VQ-022601

Reference Standard

Etofenamate EP Impurity C chemical structure

Etofenamate EP Impurity C

CAS: 101-23-5
Formula: C₁₃H₁₀F₃N
MW: 237.22 g/mol

VQ-022600

Reference Standard

Etofenamate EP Impurity D chemical structure

Etofenamate EP Impurity D

CAS: 64352-84-7
Formula: C₃₂H₂₆F₆N₂O₅
MW: 632.5 g/mol

VQ-022596

Reference Standard

Etofenamate EP Impurity E chemical structure

Etofenamate EP Impurity E

CAS: 2200281-00-9
Formula: C₂₂H₂₆F₃NO₄
MW: 425.4 g/mol

VQ-022597

Reference Standard

Etofenamate EP Impurity G chemical structure

Etofenamate EP Impurity G

CAS: 32508-98-8
Formula: C₁₆H₁₄F₃NO₃
MW: 325.28 g/mol

VQ-022598

Reference Standard

Etofenamate Palmitate chemical structure

Etofenamate Palmitate

CAS: 81427-95-4
Formula: C₃₄H₄₈F₃NO₅
MW: 607.7 g/mol

VQ-048314

Reference Standard

Etofenamate-d4 chemical structure

CAS: 1329837-73-1
Formula: C₁₈H₁₈F₃NO₄
MW: 373.4 g/mol

VQ-037150

Reference Standard

Etofenprox chemical structure

CAS: 80844-07-1
Formula: C₂₅H₂₈O₃
MW: 376.5 g/mol

VQ-032669

Reference Standard

Etomidate chemical structure

CAS: 33125-97-2
Formula: C₁₄H₁₆N₂O₂
MW: 244.29 g/mol

VQ-025664

Reference Standard

Etomidate Acid chemical structure

CAS: 56649-48-0
Formula: C₁₂H₁₂N₂O₂
MW: 216.24 g/mol

VQ-025665

Reference Standard

Etomidate EP Impurity A chemical structure

Etomidate EP Impurity A

CAS: 3157-27-5
Formula: C₁₂H₁₂N₂O₂
MW: 216.24 g/mol

VQ-037152

Reference Standard

Etomidate EP Impurity B chemical structure

Etomidate EP Impurity B

CAS: 5377-20-8
Formula: C₁₃H₁₄N₂O₂
MW: 230.26 g/mol

VQ-030621

Reference Standard

Etomidate EP Impurity C chemical structure

Etomidate EP Impurity C

CAS: 792842-51-4
Formula: C₁₅H₁₈N₂O₂
MW: 258.32 g/mol

VQ-025666

Reference Standard

Etomidate N-oxide chemical structure

Etomidate N-oxide

CAS: 2433776-55-5
Formula: C₁₄H₁₆N₂O₃
MW: 260.29 g/mol

VQ-048315

Reference Standard

Etomidate Racemate chemical structure

Etomidate Racemate

CAS: 15301-65-2
Formula: C₁₄H₁₆N₂O₂
MW: 244.29 g/mol

VQ-037154

Reference Standard

Etonogestrel - Impurity C chemical structure

Etonogestrel - Impurity C

CAS: 54024-10-1
Formula: C₂₁H₂₆O₂
MW: 310.4 g/mol

VQ-035249

Reference Standard

Etonogestrel Impurity 2 chemical structure

Etonogestrel Impurity 2

CAS: 1574323-08-2
Formula: C₂₂H₃₂O₃
MW: 344.5 g/mol

VQ-043500

Reference Standard

Etonogestrel Impurity 3 chemical structure

Etonogestrel Impurity 3

CAS: 149438-01-7
Formula: C₂₂H₃₀O₃
MW: 342.5 g/mol

VQ-044507

Reference Standard

Etonogestrel Impurity 5 chemical structure

Etonogestrel Impurity 5

CAS: 946163-53-7
Formula: C₂₄H₃₂O₃
MW: 368.5 g/mol

VQ-030624

Reference Standard

Etonogestrel USP Related Compound A chemical structure

Etonogestrel USP Related Compound A

CAS: 54024-17-8
Formula: C₂₀H₂₆O₂
MW: 298.4 g/mol

VQ-022602

Reference Standard

Etoposide EP Impurity A chemical structure

Etoposide EP Impurity A

CAS: 124151-67-3
Formula: C₃₇H₃₈O₁₅
MW: 722.7 g/mol

VQ-022606

Reference Standard

Etoposide EP Impurity B chemical structure

Etoposide EP Impurity B

CAS: 100007-56-5
Formula: C₂₉H₃₂O₁₃
MW: 588.6 g/mol

VQ-022604

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