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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.
70 products
![[reference-standards] (+)-S,S-Ethambutol dihydrochloride salt](https://www.alsachim.com/15442-list_image/--S-S-Ethambutol-dihydrochloride-salt.jpg)
![[metabolites] 25-O-desacetylrifabutin](https://www.alsachim.com/15371-list_image/25-O-desacetylrifabutin.jpg)
![[metabolites] 25-O-Desacetylrifampicin](https://www.alsachim.com/15026-list_image/25-O-Desacetylrifampicin.jpg)
![[reference-standards] Acetaminophen](https://www.alsachim.com/15091-list_image/Acetaminophen.jpg)
Acetaminophen
Product Number: C1609
CAS number: 103-90-2
Synonyms: Acetoaminophenol, N-(4-Hydroxyphenyl)-acetamide, N-Acetyl p-aminophenol, Paracetamol
![[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
![[metabolites] Acetyl-Isoniazid](https://www.alsachim.com/16772-list_image/Acetyl-Isoniazid.jpg)
![[reference-standards] Bedaquiline](https://www.alsachim.com/16058-list_image/Bedaquiline.jpg)
Bedaquiline
Product Number: C4116
CAS number: 843663-66-1
Synonyms: (1R,2S)-1-(6-Bromo-2-methoxy-3-quinolyl)-4-dimethylamino-2-(1-naphthyl)-1-phenyl-butan-2-ol, R-207910, TMC207, Sirturo
![[reference-standards] Delamanid](https://www.alsachim.com/17434-list_image/Delamanid.jpg)
![[metabolites] Delamanid metabolite](https://www.alsachim.com/21038-list_image/Delamanid-metabolite.jpg)
![[reference-standards] Deracoxib](https://www.alsachim.com/19864-list_image/Deracoxib.jpg)
![[reference-standards] Desacetyl rifapentine](https://www.alsachim.com/20016-list_image/Desacetyl-rifapentine.jpg)
![[reference-standards] Diflunisal](https://www.alsachim.com/19756-list_image/Diflunisal.jpg)
![[reference-standards] DL-Cycloserine](https://www.alsachim.com/19849-list_image/DL-Cycloserine.jpg)
![[reference-standards] Etoricoxib](https://www.alsachim.com/16306-list_image/Etoricoxib.jpg)
![[reference-standards] Imrecoxib](https://www.alsachim.com/19259-list_image/Imrecoxib.jpg)
![[reference-standards] Isoniazid](https://www.alsachim.com/14803-list_image/Isoniazid.jpg)
![[reference-standards] Lornoxicam](https://www.alsachim.com/15634-list_image/Lornoxicam.jpg)
![[reference-standards] Niflumic acid](https://www.alsachim.com/19649-list_image/Niflumic-acid.jpg)
![[metabolites] PNU-101603](https://www.alsachim.com/21036-list_image/PNU-101603.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