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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.
91 products
![[metabolites] 3,4-Dehydro-Cilostazol](https://www.alsachim.com/19937-list_image/3-4-Dehydro-Cilostazol.jpg)
![[metabolites] 5-Methylurapidil](https://www.alsachim.com/19633-list_image/5-Methylurapidil.jpg)
5-Methylurapidil
Product Number: C6736
CAS number: 34661-85-3
Synonyms: 5-Methyl-6[[3-[4-(2-methoxyphenyl)-1-piperazinyl]propyl]amino]-1,3-dimethyluracil
![[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
![[reference-standards] Betahistine hydrochloride salt](https://www.alsachim.com/17303-list_image/Betahistine-hydrochloride-salt.jpg)
![[reference-standards] Bosentan](https://www.alsachim.com/17574-list_image/Bosentan.jpg)
![[reference-standards] Bosentan sodium salt](https://www.alsachim.com/15315-list_image/Bosentan-sodium-salt.jpg)
![[reference-standards] Deracoxib](https://www.alsachim.com/19864-list_image/Deracoxib.jpg)
![[metabolites] Desmethyl Bosentan](https://www.alsachim.com/18967-list_image/Desmethyl-Bosentan.jpg)
Desmethyl Bosentan
Product Number: C5474
CAS number: 253688-61-8
Synonyms: Bosentan metabolite Ro 47-8634
![[reference-standards] Diflunisal](https://www.alsachim.com/19756-list_image/Diflunisal.jpg)
![[reference-standards] Eledoisin acetate salt](https://www.alsachim.com/20153-list_image/Eledoisin-acetate-salt.jpg)
![[reference-standards] Etoricoxib](https://www.alsachim.com/16306-list_image/Etoricoxib.jpg)
![[metabolites] Hydroxy desmethyl bosentan](https://www.alsachim.com/18968-list_image/Hydroxy-desmethyl-bosentan.jpg)
Hydroxy desmethyl bosentan
Product Number: C5476
CAS number: 253688-62-9
Synonyms: Bosentan metabolite Ro 64-1056
![[metabolites] Hydroxybosentan](https://www.alsachim.com/15600-list_image/Hydroxybosentan.jpg)
Hydroxybosentan
Product Number: C3134
CAS number: 253688-60-7
Synonyms: Bosentan metabolite Ro 48-5033
![[reference-standards] Imrecoxib](https://www.alsachim.com/19259-list_image/Imrecoxib.jpg)
![[reference-standards] Isosorbide dinitrate](https://www.alsachim.com/19156-list_image/Isosorbide-dinitrate.jpg)
![[reference-standards] Isosorbide-5-mononitrate](https://www.alsachim.com/17827-list_image/Isosorbide-5-mononitrate.jpg)
![[reference-standards] Lornoxicam](https://www.alsachim.com/15634-list_image/Lornoxicam.jpg)
![[reference-standards] Mefenamic acid](https://www.alsachim.com/18615-list_image/Mefenamic-acid.jpg)
![[reference-standards] Molsidomine](https://www.alsachim.com/18861-list_image/Molsidomine.jpg)