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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

Isotretinoin EP Impurity H chemical structure

Isotretinoin EP Impurity H

CAS: 71748-58-8
Formula: C₂₀H₂₆O₃
MW: 314.4 g/mol

VQ-022871

Reference Standard

Isotretinoin EP Impurity I chemical structure

Isotretinoin EP Impurity I

CAS: 75281-25-3
Formula: C₂₀H₂₈O₃
MW: 316.4 g/mol

VQ-022873

Reference Standard

Isotretinoin Impurity A chemical structure

Isotretinoin Impurity A

CAS: 302-79-4
Formula: C₂₀H₂₈O₂
MW: 300.4 g/mol

In stock

Reference Standard

Isotretinoin-d5 chemical structure

Isotretinoin-d5

CAS: 78996-15-3
Formula: C₂₀H₂₈O₂
MW: 305.5 g/mol

VQ-031296

Reference Standard

Isouridine chemical structure

CAS: 6745-33-1
Formula: C₉H₁₂N₂O₆
MW: 244.2 g/mol

VQ-042763

Reference Standard

Isovaleric Acid D9 chemical structure

Isovaleric Acid D9

CAS: 344298-81-3
Formula: C₅H₁₀O₂
MW: 111.19 g/mol

VQ-041243

Reference Standard

Isovaleryl chloride D9 chemical structure

Isovaleryl chloride D9

CAS: 1219803-46-9
Formula: C₅H₉ClO
MW: 129.63 g/mol

VQ-052482

Reference Standard

Isovitamin D3 chemical structure

CAS: 42607-12-5
Formula: C₂₇H₄₄O
MW: 384.6 g/mol

VQ-043157

Reference Standard

Isovitexin chemical structure

CAS: 38953-85-4
Formula: C₂₁H₂₀O₁₀
MW: 432.4 g/mol

VQ-032746

Reference Standard

Isoxepac chemical structure

CAS: 55453-87-7
Formula: C₁₆H₁₂O₄
MW: 268.26 g/mol

VQ-023333

Reference Standard

Isoxsuprine chemical structure

CAS: 395-28-8
Formula: C₁₈H₂₃NO₃
MW: 301.4 g/mol

VQ-043838

Reference Standard

Isoxsuprine EP Impurity B chemical structure

Isoxsuprine EP Impurity B

CAS: 60640-80-4
Formula: C₁₈H₂₁NO₃
MW: 299.4 g/mol

VQ-043845

Reference Standard

Isoxsuprine Hydrochloride chemical structure

Isoxsuprine Hydrochloride

CAS: 579-56-6
Formula: C₁₈H₂₄ClNO₃
MW: 337.8 g/mol

VQ-031297

Reference Standard

Isradipine chemical structure

CAS: 75695-93-1
Formula: C₁₉H₂₁N₃O₅
MW: 371.4 g/mol

VQ-022880

Reference Standard

Isradipine EP Impurity A chemical structure

Isradipine EP Impurity A

CAS: 75695-99-7
Formula: C₁₈H₁₉N₃O₅
MW: 357.4 g/mol

VQ-031298

Reference Standard

Isradipine EP Impurity B chemical structure

Isradipine EP Impurity B

CAS: 1352916-15-4
Formula: C₂₁H₂₅N₃O₅
MW: 399.4 g/mol

VQ-031299

Reference Standard

Isradipine EP Impurity C chemical structure

Isradipine EP Impurity C

CAS: 75695-84-0
Formula: C₁₇H₁₇N₃O₅
MW: 343.33 g/mol

VQ-045414

Reference Standard

Isradipine EP Impurity D chemical structure

Isradipine EP Impurity D

CAS: 116169-18-7
Formula: C₁₉H₁₉N₃O₅
MW: 369.4 g/mol

VQ-031300

Reference Standard

Istradefylline chemical structure

CAS: 155270-99-8
Formula: C₂₀H₂₄N₄O₄
MW: 384.4 g/mol

VQ-026246

Reference Standard

Itacitinib chemical structure

CAS: 1334298-90-6
Formula: C₂₆H₂₃F₄N₉O
MW: 553.5 g/mol

VQ-051470

Reference Standard

Itopride chemical structure

CAS: 122898-67-3
Formula: C₂₀H₂₆N₂O₄
MW: 358.4 g/mol

VQ-026247

Reference Standard

Itopride Impurity 12 chemical structure

Itopride Impurity 12

CAS: 20059-73-8
Formula: C₁₁H₁₈N₂O
MW: 194.27 g/mol

In stock

Reference Standard

Itopride Impurity C

Itopride Impurity C

CAS: 141996-97-6
Formula: C₁₉H₂₄N₂O₄
MW: 344.4 g/mol

VQ-022885

Reference Standard

Itopride N-Oxide chemical structure

Itopride N-Oxide

CAS: 141996-98-7
Formula: C₂₀H₂₆N₂O₅
MW: 374.4 g/mol

VQ-026248

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