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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.

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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

Mesna EP Impurity D Disodium chemical structure

Mesna EP Impurity D Disodium

CAS: 16208-51-8
Formula: C₄H₈Na₂O₆S₄
MW: 326.4 g/mol

VQ-049054

Reference Standard

Mesna EP Impurity E chemical structure

Mesna EP Impurity E

CAS: 1391054-56-0
Formula: C₅H₉N₅O₃S₂
MW: 251.3 g/mol

VQ-026619

Reference Standard

Mesna Impurity chemical structure

CAS: 1823982-49-5
Formula: C₄H₉N₃O₄S₂
MW: 227.3 g/mol

VQ-031801

Reference Standard

Mesna Impurity 2 chemical structure

Mesna Impurity 2

CAS: 1110574-95-2
Formula: C₅H₈Na₂O₇S₄
MW: 354.4 g/mol

VQ-049056

Reference Standard

Mesna Related Compound A (2-(Acetylthio)ethane-1-sulfonic acid, potassium salt, crystal adduct with potassium chloride) (1392818) chemical structure

Mesna Related Compound A (2-(Acetylthio)ethane-1-sulfonic acid, potassium salt, crystal adduct with potassium chloride) (1392818)

CAS: 2820170-85-0
Formula: C₄H₈O₄S₂
MW: 184.2 g/mol

VQ-038327

Reference Standard

Mesna-d4 (may contain up to 10% disulfide) chemical structure

Mesna-d4 (may contain up to 10% disulfide)

CAS: 1189479-73-9
Formula: C₂H₅NaO₃S₂
MW: 168.21 g/mol

VQ-049057

Reference Standard

Mesosulfuron-methyl chemical structure

Mesosulfuron-methyl

CAS: 208465-21-8
Formula: C₁₇H₂₁N₅O₉S₂
MW: 503.5 g/mol

VQ-032668

Reference Standard

Mesotrione chemical structure

CAS: 104206-82-8
Formula: C₁₄H₁₃NO₇S
MW: 339.32 g/mol

VQ-031802

Reference Standard

Mesterolone chemical structure

CAS: 1424-00-6
Formula: C₂₀H₃₂O₂
MW: 304.5 g/mol

VQ-043602

Reference Standard

Mesterolone EP Impurity A chemical structure

Mesterolone EP Impurity A

CAS: 604-26-2
Formula: C₂₀H₃₀O₂
MW: 302.5 g/mol

VQ-038328

Reference Standard

Mesterolone EP Impurity B chemical structure

Mesterolone EP Impurity B

CAS: 4011-44-3
Formula: C₂₀H₃₄O₂
MW: 306.5 g/mol

VQ-031803

Reference Standard

Mestranol chemical structure

CAS: 72-33-3
Formula: C₂₁H₂₆O₂
MW: 310.4 g/mol

VQ-043548

Reference Standard

Mesuol chemical structure

CAS: 16981-20-7
Formula: C₂₄H₂₄O₅
MW: 392.4 g/mol

VQ-040496

Reference Standard

Met(O) 27 Glucagon

Met(O) 27 Glucagon

CAS: 75217-63-9
Formula: C₁₅₃H₂₂₅N₄₃O₅₀S
MW: 3498.7 g/mol

VQ-031010

Reference Standard

meta-Mirabegron chemical structure

meta-Mirabegron

CAS: 1684452-81-0
Formula: C₂₁H₂₄N₄O₂S
MW: 396.5 g/mol

VQ-023148

Reference Standard

Metacycline chemical structure

CAS: 914-00-1
Formula: C₂₂H₂₂N₂O₈
MW: 442.4 g/mol

VQ-025404

Reference Standard

Metadoxine chemical structure

CAS: 74536-44-0
Formula: C₁₃H₁₈N₂O₆
MW: 298.29 g/mol

VQ-039797

Reference Standard

Metaflumizone chemical structure

CAS: 139968-49-3
Formula: C₂₄H₁₆F₆N₄O₂
MW: 506.4 g/mol

VQ-038329

Reference Standard

Metalaxyl chemical structure

CAS: 57837-19-1
Formula: C₁₅H₂₁NO₄
MW: 279.33 g/mol

VQ-038330

Reference Standard

Metamizole EP Impurity A chemical structure

Metamizole EP Impurity A

CAS: 1672-58-8
Formula: C₁₂H₁₃N₃O₂
MW: 231.25 g/mol

VQ-023082

Reference Standard

Metamizole EP Impurity C chemical structure

Metamizole EP Impurity C

CAS: 519-98-2
Formula: C₁₂H₁₅N₃O
MW: 217.27 g/mol

VQ-023084

Reference Standard

Metamizole EP Impurity C HCl chemical structure

Metamizole EP Impurity C HCl

CAS: 856307-27-2
Formula: C₁₂H₁₆ClN₃O
MW: 253.73 g/mol

VQ-026621

Reference Standard

Metamizole EP Impurity E chemical structure

Metamizole EP Impurity E

CAS: 129-89-5
Formula: C₁₂H₁₄N₃NaO₄S
MW: 319.31 g/mol

VQ-026622

Reference Standard

Metamizole EP Impurity E chemical structure

Metamizole EP Impurity E

CAS: 117-38-4
Formula: C₁₂H₁₅N₃O₄S
MW: 297.33 g/mol

VQ-031807

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