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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

Lamivudine Impurity 2 chemical structure

Lamivudine Impurity 2

CAS: 147027-08-5
Formula: C₁₄H₂₄O₄S
MW: 288.4 g/mol

In stock

Reference Standard

Lamivudine Impurity A

Lamivudine Impurity A

CAS: 1822826-02-7
Formula: C₈H₉N₃O₄S
MW: 243.24 g/mol

VQ-005126

Reference Standard

Lamivudine Salicylate chemical structure

Lamivudine Salicylate

CAS: 173522-96-8
Formula: C₁₅H₁₅N₃O₅S
MW: 349.4 g/mol

VQ-037868

Reference Standard

Lamivudine Sulfone chemical structure

Lamivudine Sulfone

CAS: 2250242-24-9
Formula: C₈H₁₁N₃O₅S
MW: 261.26 g/mol

VQ-048777

Reference Standard

Lamivudine Tenofovir Monosoproxil Methane chemical structure

Lamivudine Tenofovir Monosoproxil Methane

CAS: 1904611-19-3
Formula: C₂₃H₃₃N₈O₁₀PS
MW: 644.6 g/mol

VQ-037869

Reference Standard

Lamotrigine 3,3-Dimer chemical structure

Lamotrigine 3,3-Dimer

CAS: 1797983-48-2
Formula: C₁₉H₁₄Cl₄N₁₀
MW: 524.2 g/mol

VQ-026346

Reference Standard

Lamotrigine Dioxo Impurity

Lamotrigine Dioxo Impurity

CAS: 180868-97-7
Formula: C₈H₅Cl₂NO₂
MW: 218.04 g/mol

VQ-035492

Reference Standard

Lamotrigine Impurity A chemical structure

Lamotrigine Impurity A

CAS: 252186-78-0
Formula: C₉H₆Cl₂N₄O
MW: 257.07 g/mol

VQ-005127

Reference Standard

Lamotrigine impurity B chemical structure

Lamotrigine impurity B

CAS: 94213-24-8
Formula: C₉H₇Cl₂N₅
MW: 256.09 g/mol

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Reference Standard

Lamotrigine Impurity I chemical structure

Lamotrigine Impurity I

CAS: 2250242-15-8
Formula: C₁₆H₉Cl₄N₅O
MW: 429.1 g/mol

VQ-035518

Reference Standard

Lamotrigine N-Acetate chemical structure

Lamotrigine N-Acetate

CAS: 77668-57-6
Formula: C₁₁H₉Cl₂N₅O
MW: 298.13 g/mol

VQ-043729

Reference Standard

Lamotrigine RC3 chemical structure

Lamotrigine RC3

CAS: 887354-37-2
Formula: C₈H₈Cl₂N₄O
MW: 247.08 g/mol

VQ-022919

Reference Standard

Laninamivir Dioctanoate IMP

Laninamivir Dioctanoate IMP

CAS: 1169517-07-0
Formula: C₂₉H₅₀N₄O₉
MW: 598.74 g/mol

VQ-026351

Reference Standard

Lansoprazole Chloromethyl Impurity chemical structure

Lansoprazole Chloromethyl Impurity

CAS: 127337-60-4
Formula: C₉H₁₀Cl₂F₃NO
MW: 276.08 g/mol

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Reference Standard

Lansoprazole Chloromethyl Impurity (Freebase) chemical structure

Lansoprazole Chloromethyl Impurity (Freebase)

CAS: 128430-66-0
Formula: C₉H₉ClF₃NO
MW: 239.62 g/mol

VQ-005130

Reference Standard

Lansoprazole Desulphur Impurity chemical structure

Lansoprazole Desulphur Impurity

CAS: 1409978-52-4
Formula: C₁₆H₁₄F₃N₃O
MW: 321.3 g/mol

VQ-022922

Reference Standard

Lansoprazole Hydroxymethyl Impurity chemical structure

Lansoprazole Hydroxymethyl Impurity

CAS: 103577-66-8
Formula: C₉H₁₀F₃NO₂
MW: 221.18 g/mol

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Reference Standard

Lansoprazole Impurity 26 chemical structure

Lansoprazole Impurity 26

CAS: 1187926-85-7
Formula: C₁₄H₁₂N₄O₄S
MW: 332.34 g/mol

VQ-048791

Reference Standard

Lansoprazole Impurity 33 Chloride chemical structure

Lansoprazole Impurity 33 Chloride

CAS: 2730135-08-5
Formula: C₁₆H₁₅ClF₃N₃O
MW: 357.76 g/mol

VQ-037884

Reference Standard

Lansoprazole Impurity H chemical structure

Lansoprazole Impurity H

CAS: 1346598-28-4
Formula: C₂₃H₁₆F₃N₅OS
MW: 467.5 g/mol

VQ-026356

Reference Standard

Lansoprazole S-Isomer chemical structure

Lansoprazole S-Isomer

CAS: 138530-95-7
Formula: C₁₆H₁₄F₃N₃O₂S
MW: 369.4 g/mol

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Reference Standard

Lansoprazole Sulfenamide chemical structure

Lansoprazole Sulfenamide

CAS: 111712-15-3
Formula: C₁₆H₁₃F₃N₃OS⁺
MW: 352.4 g/mol

VQ-031442

Reference Standard

Lansoprazole Sulfide Dimer Impurity chemical structure

Lansoprazole Sulfide Dimer Impurity

CAS: 1083100-27-9
Formula: C₂₅H₂₂F₆N₄O₂S
MW: 556.5 g/mol

In stock

Reference Standard

Lansoprazole Thiadiazine Impurity chemical structure

Lansoprazole Thiadiazine Impurity

CAS: 1781244-56-1
Formula: C₂₃H₁₆F₃N₅OS
MW: 467.5 g/mol

VQ-022923

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