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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.
139 products
![[reference-standards] (R)-AMT](https://www.alsachim.com/20043-list_image/-R-AMT.jpg)
![[reference-standards] (R)-Eletriptan](https://www.alsachim.com/18401-list_image/-R-Eletriptan.jpg)
![[reference-standards] 1-(2-Methoxyphenyl)piperazine dihydrochloride](https://www.alsachim.com/18651-list_image/1-2-Methoxyphenyl-piperazine-dihydrochloride.jpg)
![[reference-standards] 2C-I](https://www.alsachim.com/18769-list_image/2C-I.jpg)
![[metabolites] 3-Methoxymorphinan](https://www.alsachim.com/18780-list_image/3-Methoxymorphinan.jpg)
![[reference-standards] 3-Methoxymorphinan hydrochloride salt](https://www.alsachim.com/15691-list_image/3-Methoxymorphinan-hydrochloride-salt.jpg)
![[metabolites] 4-(3-chlorophenyl)piperazine-N-oxide](https://www.alsachim.com/17590-list_image/4-3-chlorophenyl-piperazine-N-oxide.jpg)
![[reference-standards] 4-Ethyl ephedrine hydrochloride salt](https://www.alsachim.com/18323-list_image/4-Ethyl-ephedrine-hydrochloride-salt.jpg)
4-Ethyl ephedrine hydrochloride salt
Product Number: C3896
CAS number: 27465-55-0
Synonyms: 4-Ethyl-alpha-[1-(methylamino)ethyl]-benzenemethanol hydrochloride
![[metabolites] 4-Fluoro-alpha-[1-(methylamino)ethyl]-benzenemethanol hydrochloride salt](https://www.alsachim.com/20135-list_image/4-Fluoro-alpha-1-methylamino-ethyl-benzenemethanol-hydrochloride-salt.jpg)
4-Fluoro-alpha-benzenemethanol hydrochloride salt
Product Number: C3890
CAS number: 322-25-8
Synonyms: p-fluoro-alpha-[1-(methylamino)ethyl]-benzyl alcohol hydrochloride
![[reference-standards] 4-Methyl ephedrine hydrochloride salt](https://www.alsachim.com/18320-list_image/4-Methyl-ephedrine-hydrochloride-salt.jpg)
4-Methyl ephedrine hydrochloride salt
Product Number: C3893
CAS number: 27465-53-8
Synonyms: 4-methyl-alpha-[1-(methylamino)ethyl]-benzenemethanol hydrochloride
![[metabolites] 5-Acetylamino-6-formylamino-3-methyluracil](https://www.alsachim.com/17942-list_image/5-Acetylamino-6-formylamino-3-methyluracil.jpg)
5-Acetylamino-6-formylamino-3-methyluracil
Product Number: C2953
CAS number: 85438-96-6
Synonyms: AFMU, Caffeine metabolite
![[metabolites] 5-Hydroxypentyl-ADBICA](https://www.alsachim.com/19949-list_image/5-Hydroxypentyl-ADBICA.jpg)
![[reference-standards] ADBICA](https://www.alsachim.com/19948-list_image/ADBICA.jpg)
![[reference-standards] AM694](https://www.alsachim.com/18909-list_image/AM694.jpg)
![[reference-standards] AMT](https://www.alsachim.com/18772-list_image/AMT.jpg)
![[reference-standards] BB-22](https://www.alsachim.com/19682-list_image/BB-22.jpg)
![[metabolites] BB-22 3-carboxyindole metabolite](https://www.alsachim.com/17186-list_image/BB-22-3-carboxyindole-metabolite.jpg)
![[reference-standards] BML 190](https://www.alsachim.com/19134-list_image/BML-190.jpg)
![[reference-standards] Buphedrone hydrochloride salt](https://www.alsachim.com/18289-list_image/Buphedrone-hydrochloride-salt.jpg)
Buphedrone hydrochloride salt
Product Number: C3854
CAS number: 166593-10-8
Synonyms: 2-(methylamino)-1-phenyl-1-butanone hydrochloride
![[reference-standards] Butylone hydrochloride salt](https://www.alsachim.com/18300-list_image/Butylone-hydrochloride-salt.jpg)