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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.
148 products
![[metabolites] (R)-Licarbazepine](https://www.alsachim.com/17311-list_image/-R-Licarbazepine.jpg)
![[metabolites] 2-ethyl-2-phenylpropanediamide](https://www.alsachim.com/20814-list_image/2-ethyl-2-phenylpropanediamide.jpg)
2-ethyl-2-phenylpropanediamide
Product Number: C8353
CAS number: 80866-90-6
Synonyms: Primidone metabolite, PEMA
![[reference-standards] 4-Aminobutyric acid](https://www.alsachim.com/17867-list_image/4-Aminobutyric-acid.jpg)
![[metabolites] 4-Hydroxy-N-desmethylmephenytoin](https://www.alsachim.com/15125-list_image/4-Hydroxy-N-desmethylmephenytoin.jpg)
4-Hydroxy-N-desmethylmephenytoin
Product Number: C1669
CAS number: 61837-66-9
Synonyms: 5-Ethyl-5-(p-hydroxyphenyl)hydantoin
![[metabolites] 4-Hydroxymephenytoin](https://www.alsachim.com/15402-list_image/4-Hydroxymephenytoin.jpg)
![[reference-standards] 9-Hydroxymethyl-10-carbamoylacridan](https://www.alsachim.com/15757-list_image/9-Hydroxymethyl-10-carbamoylacridan.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
![[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] Brivaracetam](https://www.alsachim.com/20097-list_image/Brivaracetam.jpg)
![[reference-standards] Carbamazepine](https://www.alsachim.com/14804-list_image/Carbamazepine.jpg)
![[metabolites] Carbamazepine-10,11-epoxide](https://www.alsachim.com/15788-list_image/Carbamazepine-10-11-epoxide.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] Deracoxib](https://www.alsachim.com/19864-list_image/Deracoxib.jpg)
![[metabolites] Desmethyl-lacosamide](https://www.alsachim.com/18081-list_image/Desmethyl-lacosamide.jpg)
![[reference-standards] Diflunisal](https://www.alsachim.com/19756-list_image/Diflunisal.jpg)
![[metabolites] Eslicarbazepine](https://www.alsachim.com/17310-list_image/Eslicarbazepine.jpg)
![[reference-standards] Eslicarbazepine acetate](https://www.alsachim.com/16014-list_image/Eslicarbazepine-acetate.jpg)
Eslicarbazepine acetate
Product Number: C3987
CAS number: 236395-14-5
Synonyms: 10-Acetoxy-10,11-dihydro-5H-dibenz[b,f]azepine-5-carboxamide
![[reference-standards] Ethosuximide](https://www.alsachim.com/15548-list_image/Ethosuximide.jpg)