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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

α,α-Diphenyl-γ-butyrolactone chemical structure

α,α-Diphenyl-γ-butyrolactone

CAS: 956-89-8
Formula: C₁₆H₁₄O₂
MW: 238.28 g/mol

VQ-048926

Reference Standard

α,α,α',5-Tetramethyl-1,3-benzenediacetonitrile chemical structure

α,α,α',5-Tetramethyl-1,3-benzenediacetonitrile

CAS: 120512-38-1
Formula: C₁₄H₁₆N₂
MW: 212.29 g/mol

VQ-035737

Reference Standard

β- Hydroxy- Dextromethorphan chemical structure

β- Hydroxy- Dextromethorphan

CAS: 120442-81-1
Formula: C₁₈H₂₅NO₂
MW: 287.4 g/mol

VQ-043137

Reference Standard

β-Apo-8-carotenal chemical structure

β-Apo-8-carotenal

CAS: 1107-26-2
Formula: C₃₀H₄₀O
MW: 416.6 g/mol

VQ-032532

Reference Standard

β-Aromadendrene chemical structure

β-Aromadendrene

CAS: 72747-25-2
Formula: C₁₅H₂₄
MW: 204.35 g/mol

VQ-051853

Reference Standard

β-Boswellic Acid chemical structure

β-Boswellic Acid

CAS: 631-69-6
Formula: C₃₀H₄₈O₃
MW: 456.7 g/mol

VQ-027127

Reference Standard

β-Cholestanol chemical structure

CAS: 80-97-7
Formula: C₂₇H₄₈O
MW: 388.7 g/mol

VQ-024953

Reference Standard

β-Estradiol 17-Acetate chemical structure

β-Estradiol 17-Acetate

CAS: 1743-60-8
Formula: C₂₀H₂₆O₃
MW: 314.4 g/mol

VQ-030595

Reference Standard

β-Hydroxy Thyroxine chemical structure

β-Hydroxy Thyroxine

CAS: 107849-54-7
Formula: C₁₅H₁₁I₄NO₅
MW: 792.87 g/mol

VQ-034858

Reference Standard

β-Lumi (-)-Colchicine chemical structure

β-Lumi (-)-Colchicine

CAS: 6901-13-9
Formula: C₂₂H₂₅NO₆
MW: 399.4 g/mol

VQ-022256

Reference Standard

β-Muricholic Acid-[d5]

β-Muricholic Acid-[d5]

CAS: 2725726-62-3
Formula: C₂₄H₃₅D₅O₅
MW: 413.6 g/mol

VQ-036238

Reference Standard

β-Pinene chemical structure

CAS: 127-91-3
Formula: C₁₀H₁₆
MW: 136.23 g/mol

VQ-036101

Reference Standard

β-Tocopherol (Racemic Mixture) chemical structure

β-Tocopherol (Racemic Mixture)

CAS: 148-03-8
Formula: C₂₈H₄₈O₂
MW: 416.7 g/mol

VQ-042927

Reference Standard

Γ-Terpinene chemical structure

CAS: 99-85-4
Formula: C₁₀H₁₆
MW: 136.23 g/mol

VQ-034144

Reference Standard

Δ-4,6-Betamethasone

Δ-4,6-Betamethasone

CAS: 2317-44-4
Formula: C₂₂H₂₇FO₅
MW: 390.5 g/mol

VQ-035335

Reference Standard

δ-8(9)-Dehydroestrone Sodium Sulfate chemical structure

δ-8(9)-Dehydroestrone Sodium Sulfate

CAS: 61612-83-7
Formula: C₁₈H₁₉NaO₅S
MW: 370.4 g/mol

VQ-037100

Reference Standard

Δ5,24-Stigmastadienol chemical structure

Δ5,24-Stigmastadienol

CAS: 28949-66-8
Formula: C₂₉H₄₈O
MW: 412.7 g/mol

VQ-033945

Reference Standard

Δ9(11)-Estradiol 17-Hexanoate chemical structure

Δ9(11)-Estradiol 17-Hexanoate

CAS: 95960-05-7
Formula: C₂₅H₃₄O₃
MW: 382.5 g/mol

VQ-030594

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