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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

Rapamycin chemical structure

CAS: 53123-88-9
Formula: C₅₁H₇₉NO₁₃
MW: 914.2 g/mol

In stock

Reference Standard

Rapamycin Dialdehyde chemical structure

Rapamycin Dialdehyde

CAS: 500733-49-3
Formula: C₅₁H₇₉NO₁₅
MW: 946.2 g/mol

VQ-028047

Reference Standard

Rapamycin-D3 chemical structure

CAS: 392711-19-2
Formula: C₅₁H₇₉NO₁₃
MW: 917.2 g/mol

VQ-042192

Reference Standard

Rapamycin, 7-O-demethyl-42-O-(2-hydroxyethyl)-, (7ξ)

Rapamycin, 7-O-demethyl-42-O-(2-hydroxyethyl)-, (7ξ)

CAS: 408496-50-4
Formula: C₅₂H₈₁NO₁₄
MW: 944.2 g/mol

VQ-048320

Reference Standard

Rapidosept-d2 chemical structure

CAS: 883001-15-8
Formula: C₇H₆Cl₂O
MW: 179.04 g/mol

VQ-043440

Reference Standard

Rasagiline 2-chloro Allyl Impurity chemical structure

Rasagiline 2-chloro Allyl Impurity

CAS: 1175018-73-1
Formula: C₁₂H₁₄ClN
MW: 207.7 g/mol

In stock

Reference Standard

Rasagiline Fumarte

Rasagiline Fumarte

CAS: 164294-87-5
Formula: C₁₂H₁₃N : C₄H₄O₄
MW: 287.31 g/mol

VQ-041845

Reference Standard

Rasagiline Hemitartarate WS chemical structure

Rasagiline Hemitartarate WS

CAS: 136236-52-7
Formula: C₂₈H₃₂N₂O₆
MW: 492.6 g/mol

In stock

Reference Standard

Rasagiline Impurity 9 chemical structure

Rasagiline Impurity 9

CAS: 152605-34-0
Formula: C₉H₁₀ClNO
MW: 183.63 g/mol

VQ-041844

Reference Standard

Rasagiline Keto Impurity chemical structure

Rasagiline Keto Impurity

CAS: 1312077-03-4
Formula: C₁₂H₁₁NO
MW: 185.22 g/mol

VQ-043276

Reference Standard

Rasagiline Mesylate chemical structure

Rasagiline Mesylate

CAS: 161735-79-1
Formula: C₁₃H₁₇NO₃S
MW: 267.35 g/mol

VQ-033463

Reference Standard

Rasagiline Mesylate Impurity C chemical structure

Rasagiline Mesylate Impurity C

CAS: 1458609-07-8
Formula: C₁₅H₁₅N
MW: 209.29 g/mol

VQ-033464

Reference Standard

Rasagiline WS chemical structure

CAS: 136236-51-6
Formula: C₁₂H₁₃N
MW: 171.24 g/mol

VQ-007700

Reference Standard

Rasagiline-13C3 Mesylate chemical structure

Rasagiline-13C3 Mesylate

CAS: 1391052-18-8
Formula: C₁₃H₁₇NO₃S
MW: 270.32 g/mol

VQ-041848

Reference Standard

Raubasine chemical structure

CAS: 483-04-5
Formula: C₂₁H₂₄N₂O₃
MW: 352.4 g/mol

VQ-041849

Reference Standard

Ravidasvir Hydrochloride chemical structure

Ravidasvir Hydrochloride

CAS: 1303533-81-4
Formula: C₄₂H₅₂Cl₂N₈O₆
MW: 835.8 g/mol

VQ-045140

Reference Standard

Ravuconazole chemical structure

CAS: 182760-06-1
Formula: C₂₂H₁₇F₂N₅OS
MW: 437.5 g/mol

VQ-033472

Reference Standard

Rebamipide chemical structure

CAS: 90098-04-7
Formula: C₁₉H₁₅ClN₂O₄
MW: 370.8 g/mol

VQ-023614

Reference Standard

Rebamipide 2-Chloro Impurity chemical structure

Rebamipide 2-Chloro Impurity

CAS: 90098-06-9
Formula: C₁₉H₁₅ClN₂O₄
MW: 370.8 g/mol

VQ-023617

Reference Standard

Rebamipide 3-Chloro Impurity chemical structure

Rebamipide 3-Chloro Impurity

CAS: 90098-05-8
Formula: C₁₉H₁₅ClN₂O₄
MW: 370.8 g/mol

VQ-023615

Reference Standard

Rebamipide N-formylbenzamide chemical structure

Rebamipide N-formylbenzamide

CAS: 94670-39-0
Formula: C₈H₆ClNO₂
MW: 183.59 g/mol

VQ-033473

Reference Standard

Rebamipide-d4 chemical structure

CAS: 1219409-06-9
Formula: C₁₉H₁₅ClN₂O₄
MW: 374.8 g/mol

VQ-033476

Reference Standard

Rebaudioside B chemical structure

CAS: 58543-17-2
Formula: C₃₈H₆₀O₁₈
MW: 804.9 g/mol

VQ-033478

Reference Standard

Rebaudioside C chemical structure

CAS: 63550-99-2
Formula: C₄₄H₇₀O₂₂
MW: 951 g/mol

VQ-033477

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