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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

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Reference Standard

Sorafenib Impurity C chemical structure

Sorafenib Impurity C

CAS: 2204442-52-2
Formula: C₂₇H₂₃N₅O₆
MW: 513.5 g/mol

In stock

Reference Standard

Sorafenib Impurity D chemical structure

Sorafenib Impurity D

CAS: 2206827-14-5
Formula: C₁₇H₁₉N₃O₄
MW: 329.35 g/mol

In stock

Reference Standard

Sorafenib Impurity E chemical structure

Sorafenib Impurity E

CAS: 284670-98-0
Formula: C₂₇H₂₄N₆O₅
MW: 512.5 g/mol

In stock

Reference Standard

Sorafenib Impurity F chemical structure

Sorafenib Impurity F

CAS: 1285533-84-7
Formula: C₂₁H₁₇F₃N₄O₃
MW: 430.4 g/mol

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Reference Standard

Sorafenib Impurity F(Hydrochloride)

Sorafenib Impurity F(Hydrochloride)

CAS: 1285534-09-9
Formula: C₂₁H₁₇F₃N₄O₃.ClH
MW: 466.85 g/mol

VQ-005947

Reference Standard

Sorafenib Impurity H chemical structure

Sorafenib Impurity H

CAS: 1431697-81-2
Formula: C₂₁H₁₆ClF₃N₄O₃
MW: 464.8 g/mol

In stock

Reference Standard

Sorafenib Impurity J

Sorafenib Impurity J

CAS: 2206827-18-9
Formula: C₂₈H₂₅N₇O₆
MW: 555.54 g/mol

In stock

Reference Standard

Sorafenib IP Impurity B

Sorafenib IP Impurity B

CAS: 2514724-45-7
Formula: C₂₅H₁₄Cl₂F₄N₂O
MW: 505.29 g/mol

VQ-028090

Reference Standard

Sorafenib Phenyl Carbamate Impurity chemical structure

Sorafenib Phenyl Carbamate Impurity

CAS: 1129683-92-6
Formula: C₂₀H₁₇N₃O₄
MW: 363.4 g/mol

In stock

Reference Standard

Sparfloxacin De-amino impurity chemical structure

Sparfloxacin De-amino impurity

CAS: 103460-90-8
Formula: C₁₉H₂₁F₂N₃O₃
MW: 377.4 g/mol

VQ-042239

Reference Standard

Sparsentan Ester Impurity chemical structure

Sparsentan Ester Impurity

CAS: 1247868-68-3
Formula: C₂₅H₃₀N₂O₇S
MW: 502.6 g/mol

VQ-028097

Reference Standard

Sparsentan Hydroxy Des-MOM Impurity chemical structure

Sparsentan Hydroxy Des-MOM Impurity

CAS: 1201793-64-7
Formula: C₂₁H₂₄N₂O₅S
MW: 416.5 g/mol

VQ-028099

Reference Standard

Sparsentan Methoxy Methyl Impurity

Sparsentan Methoxy Methyl Impurity

CAS: 254741-35-0
Formula: C₃₁H₃₈N₄O₅S
MW: 578.72 g/mol

VQ-042240

Reference Standard

Sparsentan Methyl Impurity chemical structure

Sparsentan Methyl Impurity

CAS: 254741-40-7
Formula: C₃₀H₃₆N₄O₄S
MW: 548.7 g/mol

VQ-028101

Reference Standard

Sparsentan Open Ring Impurity chemical structure

Sparsentan Open Ring Impurity

CAS: 1347979-29-6
Formula: C₃₂H₄₂N₄O₆S
MW: 610.8 g/mol

VQ-028102

Reference Standard

Sparsentan Sulfonic Acid Impurity

Sparsentan Sulfonic Acid Impurity

CAS: 1255948-69-6
Formula: C₂₇H₃₄N₂O₅S
MW: 498.6 g/mol

VQ-035511

Reference Standard

Spdb-dm4 chemical structure

CAS: 1626359-62-3
Formula: C₄₆H₆₃ClN₄O₁₄S₂
MW: 995.6 g/mol

VQ-049049

Reference Standard

Spinosyn A 17-Pseudoaglycone chemical structure

Spinosyn A 17-Pseudoaglycone

CAS: 131929-68-5
Formula: C₃₃H₅₀O₉
MW: 590.7 g/mol

VQ-042249

Reference Standard

Spinosyn D 17-Pseudoaglycone chemical structure

Spinosyn D 17-Pseudoaglycone

CAS: 131929-55-0
Formula: C₃₄H₅₂O₉
MW: 604.8 g/mol

VQ-042250

Reference Standard

Spinosyn F chemical structure

CAS: 131929-65-2
Formula: C₄₀H₆₃NO₁₀
MW: 717.9 g/mol

VQ-042252

Reference Standard

Spinosyn G chemical structure

CAS: 132016-82-1
Formula: C₄₁H₆₅NO₁₀
MW: 732 g/mol

VQ-042255

Reference Standard

Spinosyn H chemical structure

CAS: 131929-66-3
Formula: C₄₀H₆₃NO₁₀
MW: 717.9 g/mol

VQ-042253

Reference Standard

Spinosyn impurity E

Spinosyn impurity E

CAS: 159195-06-9
Formula: C₃₉H₆₁NO₁₀
MW: 703.9 g/mol

VQ-042256

Reference Standard

Spiramycin I chemical structure

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

VQ-033940

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