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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.
32 products
![[metabolites] 4-Hydroxypropofol](https://www.alsachim.com/18096-list_image/4-Hydroxypropofol.jpg)
![[metabolites] 5-Carboxy-N-phenyl-2-1H-pyridone](https://www.alsachim.com/17715-list_image/5-Carboxy-N-phenyl-2-1H-pyridone.jpg)
5-Carboxy-N-phenyl-2-1H-pyridone
Product Number: C2147
CAS number: 77837-08-2
Synonyms: Pirfenidone carboxylic acid metabolite
![[metabolites] 5-Hydroxymethyl-N-phenyl-2-1H-pyridone](https://www.alsachim.com/17713-list_image/5-Hydroxymethyl-N-phenyl-2-1H-pyridone.jpg)
![[reference-standards] 6-Methylmercaptopurine](https://www.alsachim.com/17171-list_image/6-Methylmercaptopurine.jpg)
![[reference-standards] Azathioprine](https://www.alsachim.com/19804-list_image/Azathioprine.jpg)
![[metabolites] Demethylmycophenolic acid](https://www.alsachim.com/17790-list_image/Demethylmycophenolic-acid.jpg)
![[reference-standards] Glycopyrronium bromide](https://www.alsachim.com/18358-list_image/Glycopyrronium-bromide.jpg)
Glycopyrronium bromide
Product Number: C3966
CAS number: 596-51-0
Synonyms: Nodapton, Robanul, Robinul, Tarodyl, Tarodyn
![[reference-standards] Leflunomide](https://www.alsachim.com/19018-list_image/Leflunomide.jpg)
![[metabolites] Malononitrilamide](https://www.alsachim.com/18927-list_image/Malononitrilamide.jpg)
![[reference-standards] Mizoribine](https://www.alsachim.com/19370-list_image/Mizoribine.jpg)
Mizoribine
Product Number: C6075
CAS number: 50924-49-7
Synonyms: Bredinin, HE-69, NSC-289637, 1-[(2R,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-hydroxyimidazole-4-carboxamide
![[metabolites] Naratriptan-N-oxide](https://www.alsachim.com/17577-list_image/Naratriptan-N-oxide.jpg)
![[metabolites] O-Desmethyl apremilast](https://www.alsachim.com/19674-list_image/O-Desmethyl-apremilast.jpg)
![[reference-standards] Propofol](https://www.alsachim.com/15468-list_image/Propofol.jpg)
![[reference-standards] SDZ-220-581](https://www.alsachim.com/19219-list_image/SDZ-220-581.jpg)
SDZ-220-581
Product Number: C5887
CAS number: 174575-17-8
Synonyms: (2S)-2-Amino-3-[3-(2-chlorophenyl)-5-(phosphonomethyl)phenyl]propanoic acid
![[reference-standards] Sumatriptan succinate salt](https://www.alsachim.com/17808-list_image/Sumatriptan-succinate-salt.jpg)
[13C,2H3]-Mycophenolic acid acyl-β-D-glucuronide
Product Number: C5620
CAS number: 99043-04-6 unlabeled
Synonyms: [13C,2H3]-Mycophenolic acid acyl-beta-D-glucuronide