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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

Naftidrofuryl EP Impurity B chemical structure

Naftidrofuryl EP Impurity B

CAS: 35997-58-1
Formula: C₂₀H₂₄O₃
MW: 312.4 g/mol

VQ-032051

Reference Standard

Naftidrofuryl EP Impurity C chemical structure

Naftidrofuryl EP Impurity C

CAS: 115025-98-4
Formula: C₃₀H₃₃NO₂
MW: 439.6 g/mol

VQ-026814

Reference Standard

Naftidrofuryl EP Impurity D chemical structure

Naftidrofuryl EP Impurity D

CAS: 77454-16-1
Formula: C₁₃H₂₅NO₃
MW: 243.34 g/mol

VQ-026815

Reference Standard

Naftidrofuryl EP Impurity E chemical structure

Naftidrofuryl EP Impurity E

CAS: 3216-60-2
Formula: C₂₄H₂₉NO₃
MW: 379.5 g/mol

VQ-032053

Reference Standard

Naftidrofuryl EP Impurity F chemical structure

Naftidrofuryl EP Impurity F

CAS: 41359-72-2
Formula: C₂₄H₃₃NO₃
MW: 383.5 g/mol

VQ-032052

Reference Standard

Naftidrofuryl Oxalate chemical structure

Naftidrofuryl Oxalate

CAS: 3200-06-4
Formula: C₂₆H₃₅NO₇
MW: 473.6 g/mol

In stock

Reference Standard

Naftidrofuryl Oxalate Impurity C chemical structure

Naftidrofuryl Oxalate Impurity C

CAS: 115025-99-5
Formula: C₃₂H₃₅NO₆
MW: 529.6 g/mol

VQ-038542

Reference Standard

Naftifine Hydrochloride chemical structure

Naftifine Hydrochloride

CAS: 65473-14-5
Formula: C₂₁H₂₂ClN
MW: 323.9 g/mol

VQ-032054

Reference Standard

Naftifine impurity 3 chemical structure

Naftifine impurity 3

CAS: 98977-93-6
Formula: C₂₁H₂₁NO
MW: 303.4 g/mol

VQ-043581

Reference Standard

Naftifine N-Oxide chemical structure

Naftifine N-Oxide

CAS: 2847776-03-6
Formula: C₂₁H₂₁NO
MW: 303.4 g/mol

VQ-038544

Reference Standard

Naftopidil chemical structure

CAS: 57149-07-2
Formula: C₂₄H₂₈N₂O₃
MW: 392.5 g/mol

VQ-032056

Reference Standard

Nalbuphine chemical structure

CAS: 20594-83-6
Formula: C₂₁H₂₇NO₄
MW: 357.4 g/mol

VQ-044029

Reference Standard

Nalbuphine Hydrochloride chemical structure

Nalbuphine Hydrochloride

CAS: 23277-43-2
Formula: C₂₁H₂₈ClNO₄
MW: 393.9 g/mol

VQ-043234

Reference Standard

Nalbuphine Impurity 3 chemical structure

Nalbuphine Impurity 3

CAS: 116499-16-2
Formula: C₁₇H₂₁NO₄
MW: 303.35 g/mol

VQ-038546

Reference Standard

Nalmefene chemical structure

CAS: 55096-26-9
Formula: C₂₁H₂₅NO₃
MW: 339.4 g/mol

VQ-038547

Reference Standard

Nalmefene Impurity 3 chemical structure

Nalmefene Impurity 3

CAS: 738552-29-9
Formula: C₂₁H₂₅NO₃
MW: 339.4 g/mol

VQ-049188

Reference Standard

Nalmefene-d3

CAS: 2387505-61-3
Formula: C₂₁H₂₂D₃NO₃
MW: 342.45 g/mol

VQ-043427

Reference Standard

Naloxegol chemical structure

CAS: 854601-70-0
Formula: C₃₄H₅₃NO₁₁
MW: 651.8 g/mol

VQ-043235

Reference Standard

Naloxegol Oxalate chemical structure

Naloxegol Oxalate

CAS: 1354744-91-4
Formula: C₃₆H₅₅NO₁₅
MW: 741.8 g/mol

VQ-038548

Reference Standard

Naloxone chemical structure

CAS: 465-65-6
Formula: C₁₉H₂₁NO₄
MW: 327.4 g/mol

In stock

Reference Standard

Naloxone 3-O-Beta-D-glucuronide chemical structure

Naloxone 3-O-Beta-D-glucuronide

CAS: 22135-79-1
Formula: C₂₅H₂₉NO₁₀
MW: 503.5 g/mol

VQ-043771

Reference Standard

Naloxone EP Impurity A chemical structure

Naloxone EP Impurity A

CAS: 33522-95-1
Formula: C₁₆H₁₇NO₄
MW: 287.31 g/mol

In stock

Reference Standard

Naloxone EP Impurity B chemical structure

Naloxone EP Impurity B

CAS: 1352085-46-1
Formula: C₂₂H₂₅NO₄
MW: 367.4 g/mol

VQ-043236

Reference Standard

Naloxone EP Impurity C chemical structure

Naloxone EP Impurity C

CAS: 2139253-68-0
Formula: C₁₉H₂₁NO₅
MW: 343.4 g/mol

VQ-043237

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