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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

Megestrol Acetate EP Impurity F chemical structure

Megestrol Acetate EP Impurity F

CAS: 2242-65-1
Formula: C₂₄H₃₄O₄
MW: 386.5 g/mol

VQ-023041

Reference Standard

Megestrol Acetate EP Impurity G chemical structure

Megestrol Acetate EP Impurity G

CAS: 1259198-59-8
Formula: C₂₅H₃₄O₄
MW: 398.5 g/mol

VQ-038282

Reference Standard

Megestrol Acetate EP Impurity H chemical structure

Megestrol Acetate EP Impurity H

CAS: 907193-65-1
Formula: C₂₅H₃₄O₄
MW: 398.5 g/mol

VQ-023045

Reference Standard

Megestrol Acetate EP Impurity J chemical structure

Megestrol Acetate EP Impurity J

CAS: 14994-27-5
Formula: C₂₄H₃₄O₄
MW: 386.5 g/mol

VQ-023046

Reference Standard

Megestrol Acetate EP Impurity K chemical structure

Megestrol Acetate EP Impurity K

CAS: 302-23-8
Formula: C₂₃H₃₂O₄
MW: 372.5 g/mol

VQ-021270

Reference Standard

Megestrol-d3 chemical structure

CAS: 162462-71-7
Formula: C₂₂H₃₀O₃
MW: 345.5 g/mol

VQ-049029

Reference Standard

Melamine-13C3 chemical structure

CAS: 1173022-88-2
Formula: C₃H₆N₆
MW: 129.1 g/mol

VQ-038348

Reference Standard

Melanin chemical structure

CAS: 8049-97-6
Formula: C₁₈H₁₀N₂O₄
MW: 318.3 g/mol

VQ-032821

Reference Standard

Melanin chemical structure

CAS: 2323070-48-8
Formula: C₁₈H₁₀N₂O₄
MW: 318.3 g/mol

VQ-047344

Reference Standard

Melatonin EP Impurity B chemical structure

Melatonin EP Impurity B

CAS: 1210-83-9
Formula: C₁₂H₁₄N₂O₂
MW: 218.25 g/mol

VQ-023049

Reference Standard

Melatonin-d4 chemical structure

CAS: 66521-38-8
Formula: C₁₃H₁₆N₂O₂
MW: 236.3 g/mol

VQ-031771

Reference Standard

Melatonin-d7 chemical structure

CAS: 615251-68-8
Formula: C₁₃H₁₆N₂O₂
MW: 239.32 g/mol

VQ-038292

Reference Standard

Meldonium dihydrate chemical structure

Meldonium dihydrate

CAS: 86426-17-7
Formula: C₆H₁₈N₂O₄
MW: 182.22 g/mol

VQ-031908

Reference Standard

Meldonium EP Impurity B chemical structure

Meldonium EP Impurity B

CAS: 44024-83-1
Formula: C₃H₁₁N₂⁺
MW: 75.13 g/mol

VQ-038402

Reference Standard

Meldonium EP Impurity B Bromide Salt chemical structure

Meldonium EP Impurity B Bromide Salt

CAS: 34810-18-9
Formula: C₃H₁₁BrN₂
MW: 155.04 g/mol

VQ-049033

Reference Standard

Meldonium EP Impurity D (Bromide Salt) chemical structure

Meldonium EP Impurity D (Bromide Salt)

CAS: 76144-84-8
Formula: C₈H₁₉BrN₂O₂
MW: 255.15 g/mol

VQ-038401

Reference Standard

Meldonium EP Impurity F

Meldonium EP Impurity F

CAS: 4077-77-4
Formula: C₅H₁₀N₂O
MW: 114.1 g/mol

VQ-038403

Reference Standard

Meldonium Impurity C chemical structure

Meldonium Impurity C

CAS: 106966-25-0
Formula: C₇H₁₇BrN₂O₂
MW: 241.13 g/mol

VQ-049114

Reference Standard

Meldrum's Acid chemical structure

CAS: 2033-24-1
Formula: C₆H₈O₄
MW: 144.12 g/mol

VQ-007564

Reference Standard

Melengestrol Acetate chemical structure

Melengestrol Acetate

CAS: 2919-66-6
Formula: C₂₅H₃₂O₄
MW: 396.5 g/mol

VQ-038293

Reference Standard

Melengestrol Acetate Related Compound B chemical structure

Melengestrol Acetate Related Compound B

CAS: 80097-73-0
Formula: C₂₅H₃₂O₄
MW: 396.5 g/mol

VQ-049035

Reference Standard

Melitracen-D6 Hydrochloride chemical structure

Melitracen-D6 Hydrochloride

CAS: 1189648-08-5
Formula: C₂₁H₂₆ClN
MW: 333.9 g/mol

VQ-049036

Reference Standard

Meloxicam - Impurity A chemical structure

Meloxicam - Impurity A

CAS: 24683-26-9
Formula: C₁₂H₁₃NO₅S
MW: 283.3 g/mol

VQ-023052

Reference Standard

Meloxicam - Impurity F chemical structure

Meloxicam - Impurity F

CAS: 118854-48-1
Formula: C₁₃H₁₅NO₅S
MW: 297.33 g/mol

VQ-023055

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