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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.

1153 products

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[reference-standards] (R)-Gossypol

(R)-Gossypol

Product Number: C5836

CAS number: 90141-22-3

Synonyms: Pogosin, AT-101, 7-(8-Formyl-1,6,7-trihydroxy-3-methyl-5-propan-2-ylnaphthalen-2-yl)-2,3,8-trihydroxy-6-methyl-4-propan-2-ylnaphthalene-1-carbaldehyde

[reference-standards] (S)-(+)-Camptothecin

(S)-(+)-Camptothecin

Product Number: C6027

CAS number: 7689-03-4

Synonyms: (S)-4-Ethyl-4-hydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione

[reference-standards] 4'-Demethylepipodophyllotoxin

4'-Demethylepipodophyllotoxin

Product Number: C6030

CAS number: 6559-91-7

Synonyms: 4'-DMEP, (5S,5aR,8aR,9R)-5-Hydroxy-9-(4-hydroxy-3,5-dimethoxyphenyl)-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[5,6-f][1,3]benzodioxol-8-one