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Alsachim offers you its expertise and know-how in isotope enrichment labeling (13C, 2H, 15N, 18O, 34S) to quantify your compounds by LC-MS/MS analysis. Our teams synthesize labeled internal standards and reference standards, as well as metabolites and building blocks.

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[reference-standards] BB-22

BB-22

Product Number: C6903

CAS number: 1400742-42-8

Synonyms: QUCHIC

[reference-standards] Oxaprozin

Oxaprozin

Product Number: C5557

CAS number: 21256-18-8

Synonyms: 4.5-Diphenyl-2-oxazolepropanoic acid, Daypro

[reference-standards] Aspirin

Aspirin

Product Number: C6596

CAS number: 50-78-2

Synonyms: Acetylsalicylic acid

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[13C4]-11-Deoxycortisol

Product Number: C6669

CAS number: 152-58-9 unlabeled

Synonyms: 11-Deoxy-17-hydroxycorticosterone-13C4, Reichstein's substance S-13C4, 17,21-Dihydroxyprogesterone-13C4, Cortexolone-13C4