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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.
29 products
![[reference-standards] Etrasimod](https://www.alsachim.com/20991-list_image/Etrasimod.jpg)
![[metabolites] Acetaminophen β-D-glucuronide](https://www.alsachim.com/20706-list_image/Acetaminophen-beta-D-glucuronide.jpg)
Acetaminophen β-D-glucuronide
Product Number: C9165
CAS number: 16110-10-4
Synonyms: Acetaminophen beta-D-glucuronide
![[reference-standards] Scopolamine butyl bromide salt](https://www.alsachim.com/20788-list_image/Scopolamine-butyl-bromide-salt.jpg)
Scopolamine butyl bromide salt
Product Number: C9435
CAS number: 149-64-4
Synonyms: Hyoscine butyl bromide, N-Butylscopolammonium bromide
![[metabolites] Mosapride N-oxide](https://www.alsachim.com/20499-list_image/Mosapride-N-oxide.jpg)
![[reference-standards] Misoprostol acid, racemic mixture](https://www.alsachim.com/19425-list_image/Misoprostol-acid-racemic-mixture.jpg)
![[reference-standards] Niflumic acid](https://www.alsachim.com/19649-list_image/Niflumic-acid.jpg)
![[reference-standards] Diflunisal](https://www.alsachim.com/19756-list_image/Diflunisal.jpg)
![[reference-standards] Deracoxib](https://www.alsachim.com/19864-list_image/Deracoxib.jpg)
![[reference-standards] (R)-Rabeprazole sodium salt](https://www.alsachim.com/20083-list_image/-R-Rabeprazole-sodium-salt.jpg)
![[reference-standards] Misoprostol, racemic mixture](https://www.alsachim.com/17673-list_image/Misoprostol-racemic-mixture.jpg)
![[reference-standards] Lansoprazole](https://www.alsachim.com/17838-list_image/Lansoprazole.jpg)
![[reference-standards] Lansoprazole sulfone](https://www.alsachim.com/17840-list_image/Lansoprazole-sulfone.jpg)
![[reference-standards] Pantoprazole](https://www.alsachim.com/17852-list_image/Pantoprazole.jpg)
![[reference-standards] Pantoprazole sodium salt sesquihydrate](https://www.alsachim.com/17853-list_image/Pantoprazole-sodium-salt-sesquihydrate.jpg)
Pantoprazole sodium salt sesquihydrate
Product Number: C2788
CAS number: 164579-32-2
Synonyms: 5-(Difluoromethoxy)-2-[[(3,4-dimethoxy-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole sodium, Pantodac, Pantosec
![[reference-standards] Rabeprazole sodium salt](https://www.alsachim.com/17855-list_image/Rabeprazole-sodium-salt.jpg)
![[reference-standards] Tenidap](https://www.alsachim.com/18673-list_image/Tenidap.jpg)
![[reference-standards] Itopride](https://www.alsachim.com/18742-list_image/Itopride.jpg)
![[reference-standards] Itopride hydrochloride salt](https://www.alsachim.com/18757-list_image/Itopride-hydrochloride-salt.jpg)
![[reference-standards] PF 3716556](https://www.alsachim.com/19110-list_image/PF-3716556.jpg)
PF 3716556
Product Number: C5703
CAS number: 928774-43-0
Synonyms: 8-[[(4R)-3,4-dihydro-5-methyl-2H-1-benzopyran-4-yl]amino]-N-(2-hydroxyethyl)-N,2-dimethyl-imidazo[1,2-alpha]pyridine-6-carboxamide
![[reference-standards] Imrecoxib](https://www.alsachim.com/19259-list_image/Imrecoxib.jpg)