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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.
79 products
![[reference-standards] Berberubine chloride salt](https://www.alsachim.com/18571-list_image/Berberubine-chloride-salt.jpg)
![[reference-standards] Pretomanid](https://www.alsachim.com/19241-list_image/Pretomanid.jpg)
Pretomanid
Product Number: C5916
CAS number: 187235-37-6
Synonyms: PA-824, (6S)-2-Nitro-6-[[4-(trifluoromethoxy)phenyl]methoxy]-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazine
![[reference-standards] Rifapentine](https://www.alsachim.com/16310-list_image/Rifapentine.jpg)
[2H5]-Fosetyl sodium salt
Product Number: C5607
CAS number: 39148-16-8 unlabeled
Synonyms: Phosphonic acid monoethylester, sodium salt-d5
![[reference-standards] Rifabutin](https://www.alsachim.com/15440-list_image/Rifabutin.jpg)
![[reference-standards] (+)-S,S-Ethambutol dihydrochloride salt](https://www.alsachim.com/15442-list_image/--S-S-Ethambutol-dihydrochloride-salt.jpg)
![[reference-standards] Pyrazinamide](https://www.alsachim.com/15837-list_image/Pyrazinamide.jpg)
![[reference-standards] Isoniazid](https://www.alsachim.com/14803-list_image/Isoniazid.jpg)
![[metabolites] 25-O-Desacetylrifampicin](https://www.alsachim.com/15026-list_image/25-O-Desacetylrifampicin.jpg)
![[metabolites] 25-O-desacetylrifabutin](https://www.alsachim.com/15371-list_image/25-O-desacetylrifabutin.jpg)