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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

Isavuconazole Impurity 2

Isavuconazole Impurity 2

CAS: 2361206-12-2
Formula: C₁₀H₁₃ClN₂O₃
MW: 244.67 g/mol

VQ-048706

Reference Standard

Isavuconazonium amide impurity chemical structure

Isavuconazonium amide impurity

CAS: 2962831-01-0
Formula: C₃₅H₃₇F₂N₈O₆S⁺
MW: 735.8 g/mol

VQ-031247

Reference Standard

Isavuconazonium chloride(Diastereomer-2) chemical structure

Isavuconazonium chloride(Diastereomer-2)

CAS: 2169911-47-9
Formula: C₃₅H₃₅F₂N₈O₅S⁺
MW: 717.8 g/mol

VQ-045326

Reference Standard

Isavuconazonium Sulfate chemical structure

Isavuconazonium Sulfate

CAS: 946075-13-4
Formula: C₃₅H₃₆F₂N₈O₉S₂
MW: 814.8 g/mol

VQ-026227

Reference Standard

Iso Cyclosporin A chemical structure

Iso Cyclosporin A

CAS: 59865-16-6
Formula: C₆₂H₁₁₁N₁₁O₁₂
MW: 1202.6 g/mol

VQ-025122

Reference Standard

Iso Cyclosporine H chemical structure

Iso Cyclosporine H

CAS: 83602-43-1
Formula: C₁₉H₃₉NO₂
MW: 313.5 g/mol

VQ-025128

Reference Standard

Iso Detomidine chemical structure

CAS: 78892-51-0
Formula: C₁₂H₁₄N₂
MW: 186.25 g/mol

VQ-025266

Reference Standard

Iso Promethazine Hydrochloride chemical structure

Iso Promethazine Hydrochloride

CAS: 5568-90-1
Formula: C₁₇H₂₁ClN₂S
MW: 320.9 g/mol

VQ-033348

Reference Standard

Iso Sildenafil chemical structure

CAS: 253178-46-0
Formula: C₂₂H₃₀N₆O₄S
MW: 474.6 g/mol

VQ-043297

Reference Standard

Iso Tiotropium Bromide chemical structure

Iso Tiotropium Bromide

CAS: 136431-94-2
Formula: C₁₉H₂₂BrNO₄S₂
MW: 472.4 g/mol

VQ-028402

Reference Standard

Iso Tiotropium Bromide Impurity chemical structure

Iso Tiotropium Bromide Impurity

CAS: 1978292-75-9
Formula: C₁₉H₂₂BrNO₄S₂
MW: 472.4 g/mol

VQ-042561

Reference Standard

Iso-Nystatin chemical structure

CAS: 2023830-46-6
Formula: C₄₇H₇₅NO₁₇
MW: 926.1 g/mol

VQ-038705

Reference Standard

Isoamylmalonic acid chemical structure

Isoamylmalonic acid

CAS: 616-87-5
Formula: C₈H₁₄O₄
MW: 174.19 g/mol

VQ-041643

Reference Standard

Isobutyl Benzene Sulfonate chemical structure

Isobutyl Benzene Sulfonate

CAS: 24698-43-9
Formula: C₁₀H₁₄O₃S
MW: 214.28 g/mol

VQ-029280

Reference Standard

Isobutylene Oxide chemical structure

Isobutylene Oxide

CAS: 558-30-5
Formula: C₄H₈O
MW: 72.11 g/mol

VQ-039077

Reference Standard

Isochenodeoxycholic Acid chemical structure

Isochenodeoxycholic Acid

CAS: 566-24-5
Formula: C₂₄H₄₀O₄
MW: 392.6 g/mol

VQ-034508

Reference Standard

Isoescin IA chemical structure

CAS: 219944-39-5
Formula: C₅₅H₈₆O₂₄
MW: 1131.3 g/mol

VQ-030549

Reference Standard

Isoescin IB chemical structure

CAS: 219944-46-4
Formula: C₅₅H₈₆O₂₄
MW: 1131.3 g/mol

VQ-030547

Reference Standard

Isoflupredone chemical structure

CAS: 338-95-4
Formula: C₂₁H₂₇FO₅
MW: 378.4 g/mol

VQ-020945

Reference Standard

Isoflupredone 21-Phosphate Ester Disodium Salt chemical structure

Isoflupredone 21-Phosphate Ester Disodium Salt

CAS: 94088-00-3
Formula: C₂₁H₂₆FNa₂O₈P
MW: 502.4 g/mol

VQ-022868

Reference Standard

Isoflupredone Acetate chemical structure

Isoflupredone Acetate

CAS: 338-98-7
Formula: C₂₃H₂₉FO₆
MW: 420.5 g/mol

VQ-021243

Reference Standard

Isoflupropedone-21 phosphate chemical structure

Isoflupropedone-21 phosphate

CAS: 432-44-0
Formula: C₂₁H₂₈FO₈P
MW: 458.4 g/mol

VQ-032897

Reference Standard

Isoleucine Valsartan chemical structure

Isoleucine Valsartan

CAS: 137862-78-3
Formula: C₂₅H₃₁N₅O₃
MW: 449.5 g/mol

VQ-028623

Reference Standard

Isoliquiritigenin chemical structure

Isoliquiritigenin

CAS: 961-29-5
Formula: C₁₅H₁₂O₄
MW: 256.25 g/mol

VQ-039907

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