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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

Salinomycin Sodium chemical structure

Salinomycin Sodium

CAS: 55721-31-8
Formula: C₄₂H₆₉NaO₁₁
MW: 773 g/mol

VQ-033750

Reference Standard

Salmeterol chemical structure

CAS: 89365-50-4
Formula: C₂₅H₃₇NO₄
MW: 415.6 g/mol

VQ-033751

Reference Standard

Salmeterol EP Impurity A

Salmeterol EP Impurity A

CAS: 1798014-51-3
Formula: C₁₉H₂₅NO₃
MW: 315.41 g/mol

VQ-023737

Reference Standard

Salmeterol EP Impurity B chemical structure

Salmeterol EP Impurity B

CAS: 94749-02-7
Formula: C₂₃H₃₃NO₄
MW: 387.5 g/mol

VQ-023735

Reference Standard

Salmeterol EP Impurity C chemical structure

Salmeterol EP Impurity C

CAS: 94749-11-8
Formula: C₂₄H₃₅NO₄
MW: 401.5 g/mol

VQ-023736

Reference Standard

Salmeterol EP Impurity D chemical structure

Salmeterol EP Impurity D

CAS: 1391052-04-2
Formula: C₃₄H₄₇NO₇
MW: 581.7 g/mol

VQ-021339

Reference Standard

Salmeterol EP Impurity E chemical structure

Salmeterol EP Impurity E

CAS: 108928-81-0
Formula: C₂₅H₃₇NO₄
MW: 415.6 g/mol

VQ-023738

Reference Standard

Salmeterol EP Impurity F chemical structure

Salmeterol EP Impurity F

CAS: 1391054-40-2
Formula: C₂₅H₃₇NO₃
MW: 399.6 g/mol

VQ-021338

Reference Standard

Salmeterol EP Impurity G chemical structure

Salmeterol EP Impurity G

CAS: 1391051-88-9
Formula: C₅₀H₇₂N₂O₇
MW: 813.1 g/mol

VQ-033753

Reference Standard

Salmeterol EP Impurity G chemical structure

Salmeterol EP Impurity G

CAS: 2470130-36-8
Formula: C₅₀H₇₂N₂O₇
MW: 813.1 g/mol

VQ-042087

Reference Standard

Salmeterol Impurity 22 chemical structure

Salmeterol Impurity 22

CAS: 63295-94-3
Formula: C₁₇H₁₆O₅
MW: 300.3 g/mol

In stock

Reference Standard

Salmeterol Impurity 23

Salmeterol Impurity 23

CAS: 1292299-06-9
Formula: C₂₃H₂₀O₄
MW: 360.4 g/mol

In stock

Reference Standard

Salmeterol USP RC H chemical structure

Salmeterol USP RC H

CAS: 1330076-52-2
Formula: C₃₆H₄₃NO₆
MW: 585.7 g/mol

VQ-023739

Reference Standard

Salmeterol Xinafoate chemical structure

Salmeterol Xinafoate

CAS: 94749-08-3
Formula: C₃₆H₄₅NO₇
MW: 603.7 g/mol

VQ-023734

Reference Standard

Salmeterol-d3 chemical structure

CAS: 497063-94-2
Formula: C₂₅H₃₇NO₄
MW: 418.6 g/mol

VQ-033755

Reference Standard

Salvianolic Acid B chemical structure

Salvianolic Acid B

CAS: 121521-90-2
Formula: C₃₆H₃₀O₁₆
MW: 718.6 g/mol

VQ-039535

Reference Standard

Samidorphan chemical structure

CAS: 852626-89-2
Formula: C₂₁H₂₆N₂O₄
MW: 370.4 g/mol

VQ-033756

Reference Standard

Samidorphan isoquinoline dioxolane chemical structure

Samidorphan isoquinoline dioxolane

CAS: 361525-83-9
Formula: C₂₃H₂₈N₂O₅
MW: 412.5 g/mol

VQ-035415

Reference Standard

Samidorphan L-Malate chemical structure

Samidorphan L-Malate

CAS: 1204592-75-5
Formula: C₂₅H₃₂N₂O₉
MW: 504.5 g/mol

VQ-033757

Reference Standard

Samidorphan N-Oxide Impurity chemical structure

Samidorphan N-Oxide Impurity

CAS: 2098343-52-1
Formula: C₂₁H₂₆N₂O₅
MW: 386.4 g/mol

VQ-042091

Reference Standard

Sancycline 7-Ethylmethylamino Impurity chemical structure

Sancycline 7-Ethylmethylamino Impurity

CAS: 32598-29-1
Formula: C₂₄H₂₉N₃O₇
MW: 471.5 g/mol

VQ-031923

Reference Standard

Santonin chemical structure

CAS: 481-06-1
Formula: C₁₅H₁₈O₃
MW: 246.3 g/mol

VQ-042092

Reference Standard

Sapropterin chemical structure

CAS: 62989-33-7
Formula: C₉H₁₅N₅O₃
MW: 241.25 g/mol

VQ-033760

Reference Standard

Sapropterin Impurity 25 chemical structure

Sapropterin Impurity 25

CAS: 62128-61-4
Formula: C₄H₅N₅O₂
MW: 155.12 g/mol

VQ-033762

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