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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

Tulobuterol Hydrochloride chemical structure

Tulobuterol Hydrochloride

CAS: 56776-01-3
Formula: C₁₂H₁₉Cl₂NO
MW: 264.19 g/mol

VQ-028569

Reference Standard

Tulobuterol-d9 Hydrochloride chemical structure

Tulobuterol-d9 Hydrochloride

CAS: 1325559-14-5
Formula: C₁₂H₁₉Cl₂NO
MW: 273.24 g/mol

VQ-042738

Reference Standard

Turpinionoside D chemical structure

Turpinionoside D

CAS: 449742-44-3
Formula: C₁₉H₃₄O₈
MW: 390.5 g/mol

VQ-030581

Reference Standard

Tylosin chemical structure

CAS: 1401-69-0
Formula: C₄₆H₇₇NO₁₇
MW: 916.1 g/mol

VQ-034478

Reference Standard

Tylosin 3-Acetate chemical structure

Tylosin 3-Acetate

CAS: 63409-10-9
Formula: C₄₈H₇₉NO₁₈
MW: 958.1 g/mol

VQ-042741

Reference Standard

Tylosin B chemical structure

CAS: 11032-98-7
Formula: C₃₉H₆₅NO₁₄
MW: 771.9 g/mol

VQ-042552

Reference Standard

Tylosin D chemical structure

CAS: 1404-48-4
Formula: C₄₆H₇₉NO₁₇
MW: 918.1 g/mol

VQ-042742

Reference Standard

Tylosin Phosphate chemical structure

Tylosin Phosphate

CAS: 1405-53-4
Formula: C₄₆H₈₀NO₂₁P
MW: 1014.1 g/mol

VQ-042740

Reference Standard

Tylosin Tartrate chemical structure

Tylosin Tartrate

CAS: 1405-54-5
Formula: C₅₀H₈₃NO₂₃
MW: 1066.2 g/mol

VQ-042739

Reference Standard

Tylvalosin chemical structure

CAS: 63409-12-1
Formula: C₅₃H₈₇NO₁₉
MW: 1042.3 g/mol

VQ-042743

Reference Standard

Tylvalosin Tartrate chemical structure

Tylvalosin Tartrate

CAS: 63428-13-7
Formula: C₅₇H₉₃NO₂₅
MW: 1192.3 g/mol

VQ-029015

Reference Standard

Tyramine chemical structure

CAS: 51-67-2
Formula: C₈H₁₁NO
MW: 137.18 g/mol

VQ-032353

Reference Standard

Tyrothricin chemical structure

CAS: 1404-88-2
Formula: C₆₅H₈₅N₁₁O₁₃
MW: 1228.4 g/mol

VQ-034480

Reference Standard

Ubidecarenone EP Impurity A chemical structure

Ubidecarenone EP Impurity A

CAS: 3066-90-8
Formula: C₉H₁₂O₄
MW: 184.19 g/mol

VQ-034918

Reference Standard

Ubidecarenone EP Impurity B chemical structure

Ubidecarenone EP Impurity B

CAS: 303-95-7
Formula: C₄₄H₆₆O₄
MW: 659 g/mol

VQ-035322

Reference Standard

Ubidecarenone EP Impurity D chemical structure

Ubidecarenone EP Impurity D

CAS: 303-97-9
Formula: C₅₄H₈₂O₄
MW: 795.2 g/mol

VQ-023944

Reference Standard

Ubidecarenone EP Impurity E chemical structure

Ubidecarenone EP Impurity E

CAS: 2382-48-1
Formula: C₅₉H₉₀O₄
MW: 863.3 g/mol

VQ-027314

Reference Standard

Ubidecarenone EP Impurity E chemical structure

Ubidecarenone EP Impurity E

CAS: 65085-30-5
Formula: C₅₉H₉₀O₄
MW: 863.3 g/mol

VQ-044774

Reference Standard

Ubidecarenone EP Impurity F chemical structure

Ubidecarenone EP Impurity F

CAS: 65085-29-2
Formula: C₅₉H₉₀O₄
MW: 863.3 g/mol

VQ-023945

Reference Standard

Ubiquinol chemical structure

CAS: 992-78-9
Formula: C₅₉H₉₂O₄
MW: 865.4 g/mol

VQ-032366

Reference Standard

Ubrogepant chemical structure

CAS: 1374248-77-7
Formula: C₂₉H₂₆F₃N₅O₃
MW: 549.5 g/mol

VQ-028573

Reference Standard

Udenafil chemical structure

CAS: 268203-93-6
Formula: C₂₅H₃₆N₆O₄S
MW: 516.7 g/mol

VQ-042748

Reference Standard

Ulifloxacin chemical structure

CAS: 112984-60-8
Formula: C₁₆H₁₆FN₃O₃S
MW: 349.4 g/mol

VQ-042749

Reference Standard

Ulifloxacin Acyl-Beta-D glucuronide chemical structure

Ulifloxacin Acyl-Beta-D glucuronide

CAS: 172040-93-6
Formula: C₂₂H₂₄FN₃O₉S
MW: 525.5 g/mol

VQ-043341

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