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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

Tizanidine EP Impurity B chemical structure

Tizanidine EP Impurity B

CAS: 51323-05-8
Formula: C₇H₅ClN₄S₂
MW: 244.7 g/mol

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Reference Standard

Tizanidine EP Impurity C chemical structure

Tizanidine EP Impurity C

CAS: 1147548-83-1
Formula: C₁₆H₁₄Cl₂N₁₀S₂
MW: 481.4 g/mol

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Reference Standard

Tizanidine EP Impurity E chemical structure

Tizanidine EP Impurity E

CAS: 30536-19-7
Formula: C₆H₄ClN₃S
MW: 185.64 g/mol

VQ-023907

Reference Standard

Tizanidine EP Impurity G chemical structure

Tizanidine EP Impurity G

CAS: 51322-80-6
Formula: C₇H₃ClN₄S
MW: 210.64 g/mol

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Reference Standard

Tizanidine Guanidine Impurity chemical structure

Tizanidine Guanidine Impurity

CAS: 125292-37-7
Formula: C₇H₆ClN₅S
MW: 227.68 g/mol

VQ-028411

Reference Standard

Tizanidine Hydrochloride chemical structure

Tizanidine Hydrochloride

CAS: 64461-82-1
Formula: C₉H₉Cl₂N₅S
MW: 290.17 g/mol

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Reference Standard

Tizanidine Impurity D (Free Base) chemical structure

Tizanidine Impurity D (Free Base)

CAS: 560120-68-5
Formula: C₈H₇ClN₄S₂
MW: 258.8 g/mol

VQ-006038

Reference Standard

Tizanidine Impurity D (Hydriodide Salt) chemical structure

Tizanidine Impurity D (Hydriodide Salt)

CAS: 51323-03-6
Formula: C₈H₈ClIN₄S₂
MW: 386.7 g/mol

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Reference Standard

Tizanidine Impurity F chemical structure

Tizanidine Impurity F

CAS: 1147548-85-3
Formula: C₁₆H₁₁Cl₂N₉S₂
MW: 464.4 g/mol

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Reference Standard

Tizanidine USP Related Compound C chemical structure

Tizanidine USP Related Compound C

CAS: 5391-52-6
Formula: C₅H₈N₂OS
MW: 144.2 g/mol

VQ-023906

Reference Standard

Tizanidine-d4 chemical structure

CAS: 1188331-19-2
Formula: C₉H₈ClN₅S
MW: 257.74 g/mol

VQ-034299

Reference Standard

Tizoxanide chemical structure

CAS: 173903-47-4
Formula: C₁₀H₇N₃O₄S
MW: 265.25 g/mol

VQ-026930

Reference Standard

Tizoxanide Glucuronide chemical structure

Tizoxanide Glucuronide

CAS: 296777-75-8
Formula: C₁₆H₁₅N₃O₁₀S
MW: 441.4 g/mol

VQ-042578

Reference Standard

Tizoxanide Glucuronide, Sodium Salt chemical structure

Tizoxanide Glucuronide, Sodium Salt

CAS: 221287-83-8
Formula: C₁₆H₁₄N₃NaO₁₀S
MW: 463.4 g/mol

VQ-038667

Reference Standard

Tizoxanide Sulfate chemical structure

Tizoxanide Sulfate

CAS: 1391053-06-7
Formula: C₁₀H₇N₃O₇S₂
MW: 345.3 g/mol

VQ-034300

Reference Standard

Tizoxanide-d4 chemical structure

CAS: 1246817-56-0
Formula: C₁₀H₇N₃O₄S
MW: 269.27 g/mol

VQ-038669

Reference Standard

TMS- Hydroxy Canagliflozin chemical structure

TMS- Hydroxy Canagliflozin

CAS: 1132832-76-8
Formula: C₃₆H₅₇FO₆SSi₄
MW: 749.2 g/mol

VQ-036108

Reference Standard

Tobramycin chemical structure

CAS: 32986-56-4
Formula: C₁₈H₃₇N₅O₉
MW: 467.5 g/mol

VQ-023909

Reference Standard

Tobramycin Carbamate chemical structure

Tobramycin Carbamate

CAS: 51736-77-7
Formula: C₁₉H₃₈N₆O₁₀
MW: 510.5 g/mol

VQ-035529

Reference Standard

Tobramycin Impurity 1 chemical structure

Tobramycin Impurity 1

CAS: 74501-86-3
Formula: C₁₈H₃₅N₅O₈
MW: 449.5 g/mol

VQ-034301

Reference Standard

Tocopheryl Acetate EP Impurity A

Tocopheryl Acetate EP Impurity A

CAS: 2714760-45-7
Formula: C₃₁H₅₂O₃
MW: 472.74 g/mol

VQ-034666

Reference Standard

Tocopheryl Acetate EP Impurity B chemical structure

Tocopheryl Acetate EP Impurity B

CAS: 1560716-42-8
Formula: C₃₁H₅₂O₃
MW: 472.7 g/mol

VQ-042926

Reference Standard

Tofacitinib chemical structure

CAS: 477600-75-2
Formula: C₁₆H₂₀N₆O
MW: 312.37 g/mol

VQ-007805

Reference Standard

Tofacitinib Amine Impurity chemical structure

Tofacitinib Amine Impurity

CAS: 477600-74-1
Formula: C₁₃H₁₉N₅
MW: 245.32 g/mol

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