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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.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

R-Ivabradine chemical structure

CAS: 167072-91-5
Formula: C₂₇H₃₆N₂O₅
MW: 468.6 g/mol

VQ-031332

Reference Standard

R-Mirtazapine chemical structure

CAS: 61364-37-2
Formula: C₁₇H₁₉N₃
MW: 265.35 g/mol

VQ-035145

Reference Standard

R-Modafinil Acid chemical structure

R-Modafinil Acid

CAS: 112111-45-2
Formula: C₁₅H₁₄O₃S
MW: 274.3 g/mol

VQ-028838

Reference Standard

R-Nimodipine chemical structure

CAS: 77940-92-2
Formula: C₂₁H₂₆N₂O₇
MW: 418.4 g/mol

VQ-032163

Reference Standard

R-Pralatrexate chemical structure

CAS: 1320211-70-8
Formula: C₂₃H₂₃N₇O₅
MW: 477.5 g/mol

VQ-033262

Reference Standard

R-Pregabalin Amide Lactose Adduct chemical structure

R-Pregabalin Amide Lactose Adduct

CAS: 501665-88-9
Formula: C₂₀H₃₅NO₁₁
MW: 465.5 g/mol

VQ-041627

Reference Standard

R-Safinamide methanesulfonate

R-Safinamide methanesulfonate

CAS: 248582-83-4
Formula: C₁₈H₂₃FN₂O₅S
MW: 398.45 g/mol

VQ-042073

Reference Standard

R-Thiotic Acid Tromethamine chemical structure

R-Thiotic Acid Tromethamine

CAS: 137314-40-0
Formula: C₁₂H₂₅NO₅S₂
MW: 327.5 g/mol

VQ-034198

Reference Standard

R(-)-Hydroxy Chloroquine chemical structure

R(-)-Hydroxy Chloroquine

CAS: 137433-23-9
Formula: C₁₈H₂₆ClN₃O
MW: 335.9 g/mol

VQ-031106

Reference Standard

R(-)-Lercanidipine-d3 Hydrochloride chemical structure

R(-)-Lercanidipine-d3 Hydrochloride

CAS: 1217724-52-1
Formula: C₃₆H₄₂ClN₃O₆
MW: 651.2 g/mol

VQ-037959

Reference Standard

R(+)Amlodipine Besylate chemical structure

R(+)Amlodipine Besylate

CAS: 828247-64-9
Formula: C₂₆H₃₁ClN₂O₈S
MW: 567.1 g/mol

VQ-020792

Reference Standard

Rabeprazole chemical structure

CAS: 117976-89-3
Formula: C₁₈H₂₁N₃O₃S
MW: 359.4 g/mol

VQ-007689

Reference Standard

Rabeprazole 0.276 RRT Impurity

Rabeprazole 0.276 RRT Impurity

Formula: C₁₈H₁₈N₃O₃⁺
MW: 324.35 g/mol

In stock

Reference Standard

Rabeprazole 2-Chloromethyl Impurity chemical structure

Rabeprazole 2-Chloromethyl Impurity

CAS: 153259-31-5
Formula: C₁₁H₁₇Cl₂NO₂
MW: 266.16 g/mol

In stock

Reference Standard

Rabeprazole 2-Chloromethyl Impurity(Freebase) chemical structure

Rabeprazole 2-Chloromethyl Impurity(Freebase)

CAS: 117977-20-5
Formula: C₁₁H₁₆ClNO₂
MW: 229.7 g/mol

VQ-005684

Reference Standard

Rabeprazole 4-Methoxy Impurity chemical structure

Rabeprazole 4-Methoxy Impurity

CAS: 102804-77-3
Formula: C₁₅H₁₅N₃O₂S
MW: 301.4 g/mol

In stock

Reference Standard

Rabeprazole Carboxylic Acid Impurity chemical structure

Rabeprazole Carboxylic Acid Impurity

CAS: 1163685-31-1
Formula: C₁₁H₁₅NO₄
MW: 225.24 g/mol

VQ-027713

Reference Standard

Rabeprazole EP Impurity B chemical structure

Rabeprazole EP Impurity B

CAS: 117977-21-6
Formula: C₁₈H₂₁N₃O₂S
MW: 343.4 g/mol

VQ-023601

Reference Standard

Rabeprazole EP Impurity C chemical structure

Rabeprazole EP Impurity C

CAS: 1163685-30-0
Formula: C₁₄H₁₁N₃O₃
MW: 269.25 g/mol

In stock

Reference Standard

Rabeprazole EP Impurity C Sodium Salt chemical structure

Rabeprazole EP Impurity C Sodium Salt

CAS: 2437254-50-5
Formula: C₁₄H₁₀N₃NaO₃
MW: 291.24 g/mol

VQ-006625

Reference Standard

Rabeprazole EP Impurity G chemical structure

Rabeprazole EP Impurity G

CAS: 102804-82-0
Formula: C₁₅H₁₅N₃OS
MW: 285.4 g/mol

In stock

Reference Standard

Rabeprazole EP Impurity I chemical structure

Rabeprazole EP Impurity I

CAS: 924663-37-6
Formula: C₁₈H₂₁N₃O₅S
MW: 391.4 g/mol

In stock

Reference Standard

Rabeprazole Impurity 1 (N-2) Stage chemical structure

Rabeprazole Impurity 1 (N-2) Stage

CAS: 54874-26-9
Formula: C₈H₁₀O₂
MW: 138.16 g/mol

In stock

Reference Standard

Rabeprazole Impurity 2 chemical structure

Rabeprazole Impurity 2

CAS: 1807988-36-8
Formula: C₁₈H₁₉N₃O₄
MW: 341.4 g/mol

VQ-005687

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