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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] Oxaprozin

Oxaprozin

Product Number: C5557

CAS number: 21256-18-8

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

[reference-standards] Levomefolate calcium salt

Levomefolate calcium salt

Product Number: C6234

CAS number: 151533-22-1

Synonyms: LMCA, Metafolin, 5-Methyl-tetrahydrofolate calcium salt, L-Methylfolate calcium salt

[reference-standards] Aspirin

Aspirin

Product Number: C6596

CAS number: 50-78-2

Synonyms: Acetylsalicylic acid

[reference-standards] Ketoprofen

Ketoprofen

Product Number: C7033

CAS number: 22071-15-4

Synonyms: 2-(3-Benzoylphenyl)propionic acid

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[13C6]-Folic acid

Product Number: C7411

CAS number: 161406-20-8

Synonyms: N-[4-[[(2-Amino-3,4-dihydro-4-oxo-6-pteridinyl)methyl]amino]benzoyl]-L-glutamic acid-13C6, Vitamin B9-13C6