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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

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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

Spinosyn L chemical structure

CAS: 149092-01-3
Formula: C₄₁H₆₅NO₁₀
MW: 732 g/mol

VQ-042257

Reference Standard

Spinosyn Q chemical structure

CAS: 149438-28-8
Formula: C₄₁H₆₅NO₁₀
MW: 732 g/mol

VQ-042258

Reference Standard

Spiramycin Adipate chemical structure

Spiramycin Adipate

CAS: 68880-55-7
Formula: C₄₉H₈₄N₂O₁₈
MW: 989.2 g/mol

VQ-033938

Reference Standard

Spiramycin EP Impurity A chemical structure

Spiramycin EP Impurity A

CAS: 70253-62-2
Formula: C₃₆H₆₂N₂O₁₁
MW: 698.9 g/mol

VQ-033939

Reference Standard

Spiramycin EP Impurity B chemical structure

Spiramycin EP Impurity B

CAS: 249930-66-3
Formula: C₄₃H₇₆N₂O₁₄
MW: 845.1 g/mol

VQ-028110

Reference Standard

Spiramycin EP Impurity C chemical structure

Spiramycin EP Impurity C

CAS: 177584-13-3
Formula: C₄₄H₇₄N₂O₁₄
MW: 855.1 g/mol

VQ-028112

Reference Standard

Spiramycin EP Impurity D chemical structure

Spiramycin EP Impurity D

CAS: 87708-39-2
Formula: C₄₂H₇₁NO₁₆
MW: 846 g/mol

VQ-042263

Reference Standard

Spiramycin EP Impurity E chemical structure

Spiramycin EP Impurity E

CAS: 177584-14-4
Formula: C₄₃H₇₆N₂O₁₃
MW: 829.1 g/mol

VQ-028111

Reference Standard

Spiramycin EP Impurity H chemical structure

Spiramycin EP Impurity H

CAS: 4617-99-6
Formula: C₃₉H₆₆N₂O₁₂
MW: 754.9 g/mol

VQ-028109

Reference Standard

Spiramycin I chemical structure

CAS: 24916-50-5
Formula: C₄₃H₇₄N₂O₁₄
MW: 843.1 g/mol

VQ-033940

Reference Standard

Spiramycin III chemical structure

CAS: 24916-52-7
Formula: C₄₆H₇₈N₂O₁₅
MW: 899.1 g/mol

VQ-028108

Reference Standard

Spiroalmotriptan chemical structure

Spiroalmotriptan

CAS: 1309457-18-8
Formula: C₁₇H₂₅N₃O₃S
MW: 351.5 g/mol

VQ-020760

Reference Standard

Spirodiclofen chemical structure

CAS: 148477-71-8
Formula: C₂₁H₂₄Cl₂O₄
MW: 411.3 g/mol

VQ-038925

Reference Standard

Spironolactone EP impurity A chemical structure

Spironolactone EP impurity A

CAS: 132458-33-4
Formula: C₂₄H₃₀O₄S
MW: 414.6 g/mol

VQ-028118

Reference Standard

Spironolactone EP Impurity C chemical structure

Spironolactone EP Impurity C

CAS: 976-70-5
Formula: C₂₂H₃₀O₃
MW: 342.5 g/mol

VQ-028115

Reference Standard

Spironolactone EP Impurity D chemical structure

Spironolactone EP Impurity D

CAS: 3079028-52-4
Formula: C₂₄H₃₂O₄S₂
MW: 448.6 g/mol

VQ-033942

Reference Standard

Spironolactone EP Impurity E chemical structure

Spironolactone EP Impurity E

CAS: 33784-05-3
Formula: C₂₄H₃₂O₄S
MW: 416.6 g/mol

VQ-028114

Reference Standard

Spironolactone EP Impurity F chemical structure

Spironolactone EP Impurity F

CAS: 976-71-6
Formula: C₂₂H₂₈O₃
MW: 340.5 g/mol

VQ-028113

Reference Standard

Spironolactone EP impurity G chemical structure

Spironolactone EP impurity G

CAS: 880106-10-5
Formula: C₂₄H₃₂O₅S
MW: 432.6 g/mol

VQ-028116

Reference Standard

Spironolactone EP Impurity H chemical structure

Spironolactone EP Impurity H

CAS: 53866-24-3
Formula: C₂₀H₂₆O₂
MW: 298.4 g/mol

VQ-028117

Reference Standard

Spironolactone EP Impurity I chemical structure

Spironolactone EP Impurity I

CAS: 3070439-36-7
Formula: C₂₄H₃₆O₄S
MW: 420.6 g/mol

VQ-042264

Reference Standard

Spirotetramat chemical structure

CAS: 203313-25-1
Formula: C₂₁H₂₇NO₅
MW: 373.4 g/mol

VQ-042267

Reference Standard

SRR uncyclized ezetimibe impurity chemical structure

SRR uncyclized ezetimibe impurity

CAS: 1621715-63-6
Formula: C₃₃H₃₀F₂N₂O₅
MW: 572.6 g/mol

VQ-025707

Reference Standard

Stanozolol EP Impurity A chemical structure

Stanozolol EP Impurity A

CAS: 521-11-9
Formula: C₂₀H₃₂O₂
MW: 304.5 g/mol

VQ-028120

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