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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.
98 products
![[reference-standards] E6005](https://www.alsachim.com/20238-list_image/E6005.jpg)
![[stable-labeled-standards] [13C,2H3]-Roflumilast](https://www.alsachim.com/19725-list_image/-13C-2H3-Roflumilast.jpg)
Roflumilast
Product Number: C7044
CAS number: 1616666-83-1 unlabeled
Synonyms: [13C, 2H3]-Daxas prodrug
![[reference-standards] Diflunisal](https://www.alsachim.com/19756-list_image/Diflunisal.jpg)
![[reference-standards] Olsalazine sodium salt](https://www.alsachim.com/19838-list_image/Olsalazine-sodium-salt.jpg)
![[reference-standards] Tolfenamic acid](https://www.alsachim.com/19952-list_image/Tolfenamic-acid.jpg)
![[reference-standards] Crisaborole](https://www.alsachim.com/20005-list_image/Crisaborole.jpg)
![[reference-standards] Oxaprozin](https://www.alsachim.com/16700-list_image/Oxaprozin.jpg)
[2H4]-Oxaprozin
Product Number: C5558
CAS number: 21256-18-8 unlabeled
Synonyms: 4.5-Diphenyl-2-oxazolepropanoic acid-d4, Daypro-d4
[2H10]-Oxaprozin
Product Number: C5559
CAS number: 21256-18-8 unlabeled
Synonyms: 4.5-Diphenyl-2-oxazolepropanoic acid-d10, Daypro-d10