![[reference-standards] 4,6-Dioxoheptanoic acid](https://www.alsachim.com/16969-list_image/4-6-Dioxoheptanoic-acid.jpg)
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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.
117 products
![[reference-standards] Azoxystrobin](https://www.alsachim.com/17671-list_image/Azoxystrobin.jpg)
![[reference-standards] Belnacasan](https://www.alsachim.com/19189-list_image/Belnacasan.jpg)
Belnacasan
Product Number: C5851
CAS number: 273404-37-8
Synonyms: VX-765, (2S)-1-[(2S)-2-[(4-Amino-3-chlorobenzoyl)amino]-3,3-dimethylbutanoyl]-N-[(2R,3S)-2-ethoxy-5-oxooxolan-3-yl]pyrrolidine-2-carboxamide
![[reference-standards] Bendamustine hydrochloride salt](https://www.alsachim.com/16121-list_image/Bendamustine-hydrochloride-salt.jpg)
![[reference-standards] Berberubine chloride salt](https://www.alsachim.com/18571-list_image/Berberubine-chloride-salt.jpg)
![[reference-standards] Boscalid](https://www.alsachim.com/19518-list_image/Boscalid.jpg)
![[reference-standards] Brivaracetam](https://www.alsachim.com/20097-list_image/Brivaracetam.jpg)
![[reference-standards] Busulfan](https://www.alsachim.com/16762-list_image/Busulfan.jpg)
![[reference-standards] Carisbamate](https://www.alsachim.com/17775-list_image/Carisbamate.jpg)
![[reference-standards] Cenobamate, racemic mixture](https://www.alsachim.com/20690-list_image/Cenobamate-racemic-mixture.jpg)
![[reference-standards] Chlorothalonil](https://www.alsachim.com/19895-list_image/Chlorothalonil.jpg)
![[reference-standards] Cyclophosphamide monohydrate](https://www.alsachim.com/15001-list_image/Cyclophosphamide-monohydrate.jpg)
![[reference-standards] Dacarbazine](https://www.alsachim.com/16978-list_image/Dacarbazine.jpg)
![[metabolites] Desmethyl-lacosamide](https://www.alsachim.com/18081-list_image/Desmethyl-lacosamide.jpg)
![[reference-standards] Felbamate](https://www.alsachim.com/20815-list_image/Felbamate.jpg)
![[reference-standards] Fluxapyroxad](https://www.alsachim.com/20702-list_image/Fluxapyroxad.jpg)
![[reference-standards] Fotemustine](https://www.alsachim.com/19373-list_image/Fotemustine.jpg)
Fotemustine
Product Number: C6081
CAS number: 92118-27-9
Synonyms: Muphoran, Mustoforan, S-10036, 1-(2-Chloroethyl)-3-(1-diethoxyphosphorylethyl)-1-nitrosourea
![[metabolites] gamma-Hydroxybendamustine sodium salt](https://www.alsachim.com/16122-list_image/gamma-hydroxybendamustine-sodium-salt.jpg)
gamma-Hydroxybendamustine sodium salt
Product Number: C4303
CAS number: 1138238-08-0 free acid
Synonyms: Bendamustine metabolite M3 sodium salt
![[reference-standards] Ifosfamide](https://www.alsachim.com/16812-list_image/Ifosfamide.jpg)
![[reference-standards] Lacosamide](https://www.alsachim.com/15655-list_image/Lacosamide.jpg)