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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

Latrepirdine chemical structure

CAS: 3613-73-8
Formula: C₂₁H₂₅N₃
MW: 319.4 g/mol

VQ-048807

Reference Standard

Lauric Acid-d23 chemical structure

Lauric Acid-d23

CAS: 59154-43-7
Formula: C₁₂H₂₄O₂
MW: 223.46 g/mol

VQ-041239

Reference Standard

Lauroside D chemical structure

CAS: 820986-53-6
Formula: C₁₉H₃₄O₈
MW: 390.5 g/mol

VQ-030582

Reference Standard

Lauroyl Arginine Hydrochloride chemical structure

Lauroyl Arginine Hydrochloride

CAS: 181434-85-5
Formula: C₁₈H₃₇ClN₄O₃
MW: 393 g/mol

VQ-043456

Reference Standard

Lazertinib chemical structure

CAS: 1903008-80-9
Formula: C₃₀H₃₄N₈O₃
MW: 554.6 g/mol

VQ-007529

Reference Standard

Lazertinib (Step A-Stage 1)

Lazertinib (Step A-Stage 1)

Formula: C₁₄H₉ClN₄O
MW: 284.7 g/mol

In stock

Reference Standard

Lazertinib (Step B-Stage 2) chemical structure

Lazertinib (Step B-Stage 2)

CAS: 1903010-18-3
Formula: C₁₁H₁₅N₃O₄
MW: 253.25 g/mol

In stock

Reference Standard

Lazertinib Desmethyl N-Nitroso Impurity

Lazertinib Desmethyl N-Nitroso Impurity

Formula: C₂₉H₃₁N₉O₄
MW: 569.61 g/mol

In stock

Reference Standard

Lazertinib Impurity 5

Lazertinib Impurity 5

CAS: 2270944-72-2
Formula: C₃₀H₃₅ClN₈O₃
MW: 591.11 g/mol

VQ-048810

Reference Standard

Lazertinib Impurity 7

Lazertinib Impurity 7

Formula: C₂₅H₂₃N₇O₅
MW: 501.49 g/mol

VQ-005136

Reference Standard

Lazertinib Impurity 8

Lazertinib Impurity 8

Formula: C₃₀H₃₆N₈O₄
MW: 572.66 g/mol

VQ-005137

Reference Standard

Lazertinib Mesylate Monohydrate chemical structure

Lazertinib Mesylate Monohydrate

CAS: 2411549-88-5
Formula: C₃₁H₄₀N₈O₇S
MW: 668.8 g/mol

In stock

Reference Standard

Lecirelin chemical structure

CAS: 61012-19-9
Formula: C₅₉H₈₄N₁₆O₁₂
MW: 1209.4 g/mol

VQ-031457

Reference Standard

Ledipasvir chemical structure

CAS: 1256388-51-8
Formula: C₄₉H₅₄F₂N₈O₆
MW: 889 g/mol

VQ-031458

Reference Standard

Ledipasvir Acetone chemical structure

Ledipasvir Acetone

CAS: 1441674-54-9
Formula: C₅₂H₆₀F₂N₈O₇
MW: 947.1 g/mol

VQ-048811

Reference Standard

Ledipasvir Acetyl Spiro Impurity

Ledipasvir Acetyl Spiro Impurity

CAS: 2040487-36-1
Formula: C₄₄H₄₅F₂N₇O₄
MW: 773.87 g/mol

VQ-031459

Reference Standard

Ledipasvir boronic acid Intermediate chemical structure

Ledipasvir boronic acid Intermediate

CAS: 1256387-87-7
Formula: C₂₄H₃₄BN₃O₄
MW: 439.4 g/mol

VQ-045259

Reference Standard

Ledipasvir Bromo Intermediate chemical structure

Ledipasvir Bromo Intermediate

CAS: 1441670-89-8
Formula: C₂₇H₂₆BrF₂N₃O₂
MW: 542.4 g/mol

VQ-045258

Reference Standard

Ledipasvir D tartrate chemical structure

Ledipasvir D tartrate

CAS: 1502654-87-6
Formula: C₅₃H₆₀F₂N₈O₁₂
MW: 1039.1 g/mol

VQ-037916

Reference Standard

Ledipasvir Impurity-3 chemical structure

Ledipasvir Impurity-3

CAS: 1256388-50-7
Formula: C₂₉H₂₉BrF₂N₄O₃
MW: 599.5 g/mol

VQ-037917

Reference Standard

Lefamulin chemical structure

CAS: 1061337-51-6
Formula: C₂₈H₄₅NO₅S
MW: 507.7 g/mol

VQ-048813

Reference Standard

Lefamulin acetate chemical structure

Lefamulin acetate

CAS: 1350636-82-6
Formula: C₃₀H₄₉NO₇S
MW: 567.8 g/mol

VQ-048776

Reference Standard

Leflunomide chemical structure

CAS: 75706-12-6
Formula: C₁₂H₉F₃N₂O₂
MW: 270.21 g/mol

VQ-022937

Reference Standard

Leflunomide EP Impurity A chemical structure

Leflunomide EP Impurity A

CAS: 455-14-1
Formula: C₇H₆F₃N
MW: 161.12 g/mol

VQ-022939

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