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Impurities & Reference Standards

Pharmacopeial Impurities (EP / USP / BP)

578 pharmacopeial impurities (ep / usp / bp) with CAS numbers, structures and specifications — batch COA and GHS SDS supplied.

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Reference Standard

Itraconazole EP Impurity B chemical structure

Itraconazole EP Impurity B

CAS: 854372-77-3
Formula: C₃₅H₃₈Cl₂N₈O₄
MW: 705.6 g/mol

VQ-026251

Reference Standard

Itraconazole EP Impurity C chemical structure

Itraconazole EP Impurity C

CAS: 74855-91-7
Formula: C₃₄H₃₆Cl₂N₈O₄
MW: 691.6 g/mol

VQ-022886

Reference Standard

Itraconazole EP Impurity D chemical structure

Itraconazole EP Impurity D

CAS: 89848-49-7
Formula: C₃₄H₃₆Cl₂N₈O₄
MW: 691.6 g/mol

VQ-022887

Reference Standard

Itraconazole EP Impurity E chemical structure

Itraconazole EP Impurity E

CAS: 252964-65-1
Formula: C₃₅H₃₈Cl₂N₈O₄
MW: 705.6 g/mol

VQ-026252

Reference Standard

Itraconazole EP Impurity F chemical structure

Itraconazole EP Impurity F

CAS: 89848-51-1
Formula: C₃₅H₃₈Cl₂N₈O₄
MW: 705.6 g/mol

VQ-026253

Reference Standard

Itraconazole EP Impurity G

Itraconazole EP Impurity G

CAS: 3023702-71-5
Formula: C₄₄H₄₁Cl₄N₁₁O₆
MW: 961.7 g/mol

VQ-037766

Reference Standard

Ivermectin EP Impurity B chemical structure

Ivermectin EP Impurity B

CAS: 65195-56-4
Formula: C₄₇H₇₀O₁₄
MW: 859 g/mol

VQ-026276

Reference Standard

Ivermectin EP Impurity C chemical structure

Ivermectin EP Impurity C

CAS: 65195-57-5
Formula: C₄₈H₇₄O₁₅
MW: 891.1 g/mol

VQ-022897

Reference Standard

Ivermectin EP Impurity D chemical structure

Ivermectin EP Impurity D

CAS: 102190-55-6
Formula: C₄₈H₇₂O₁₅
MW: 889.1 g/mol

VQ-022894

Reference Standard

Ivermectin EP Impurity G chemical structure

Ivermectin EP Impurity G

CAS: 73162-95-5
Formula: C₃₄H₅₀O₈
MW: 586.8 g/mol

VQ-026273

Reference Standard

Ivermectin EP Impurity H chemical structure

Ivermectin EP Impurity H

CAS: 71837-27-9
Formula: C₄₁H₆₂O₁₁
MW: 730.9 g/mol

VQ-022895

Reference Standard

Ivermectin EP Impurity K chemical structure

Ivermectin EP Impurity K

CAS: 74567-01-4
Formula: C₄₈H₇₆O₁₄
MW: 877.1 g/mol

VQ-022896

Reference Standard

Josamycin EP Impurity A chemical structure

Josamycin EP Impurity A

CAS: 18361-46-1
Formula: C₄₁H₆₇NO₁₅
MW: 814 g/mol

VQ-026280

Reference Standard

Josamycin EP Impurity B chemical structure

Josamycin EP Impurity B

CAS: 40361-41-9
Formula: C₄₂H₇₁NO₁₅
MW: 830 g/mol

VQ-026281

Reference Standard

Josamycin EP Impurity D chemical structure

Josamycin EP Impurity D

CAS: 22340-94-9
Formula: C₄₂H₆₉NO₁₅
MW: 828 g/mol

VQ-031357

Reference Standard

Josamycin EP Impurity E chemical structure

Josamycin EP Impurity E

CAS: 40615-47-2
Formula: C₄₃H₇₁NO₁₅
MW: 842 g/mol

VQ-026282

Reference Standard

Josamycin EP Impurity F chemical structure

Josamycin EP Impurity F

CAS: 22875-15-6
Formula: C₃₅H₅₉NO₁₃
MW: 701.8 g/mol

VQ-026283

Reference Standard

Josamycin EP Impurity G chemical structure

Josamycin EP Impurity G

CAS: 18361-49-4
Formula: C₃₇H₆₁NO₁₄
MW: 743.9 g/mol

VQ-031360

Reference Standard

Josamycin EP Impurity H chemical structure

Josamycin EP Impurity H

CAS: 16846-34-7
Formula: C₄₀H₆₇NO₁₄
MW: 786 g/mol

VQ-026284

Reference Standard

Josamycin EP Impurity I chemical structure

Josamycin EP Impurity I

CAS: 18361-47-2
Formula: C₃₈H₆₃NO₁₄
MW: 757.9 g/mol

VQ-031361

Reference Standard

Josamycin EP Impurity J

Josamycin EP Impurity J

CAS: 851759-08-5
Formula: C₄₃H₇₁NO₁₅
MW: 842.02 g/mol

VQ-031362

Reference Standard

Josamycin EP Impurity K chemical structure

Josamycin EP Impurity K

CAS: 18361-48-3
Formula: C₄₀H₆₅NO₁₅
MW: 799.9 g/mol

VQ-026285

Reference Standard

Josamycin Propionate EP Impurity A chemical structure

Josamycin Propionate EP Impurity A

CAS: 610800-05-0
Formula: C₄₂H₆₇NO₁₆
MW: 842 g/mol

VQ-031358

Reference Standard

Josamycin Propionate EP Impurity B chemical structure

Josamycin Propionate EP Impurity B

CAS: 56827-17-9
Formula: C₄₂H₆₉NO₁₅
MW: 828 g/mol

VQ-031359

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