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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.
123 products
![[metabolites] (-)-(3S)-3-Hydroxyquinine](https://www.alsachim.com/17739-list_image/---3S-3-Hydroxyquinine.jpg)
![[reference-standards] (S)-Sulfocysteine sodium salt](https://www.alsachim.com/20111-list_image/-S-Sulfocysteine-sodium-salt.jpg)
![[reference-standards] 3-Amino-1H-[1,2,4]-triazole-1-alanine](https://www.alsachim.com/17742-list_image/3-Amino-1H-1-2-4-triazole-1-alanine.jpg)
3-Amino-1H-triazole-1-alanine
Product Number: C2392
CAS number: 2990-18-3
Synonyms: alpha,3-Diamino-1H-1,2,4-triazole-1-propanoic acid
![[reference-standards] 3-Amino-1H-[1,2,4]-triazole-1-alanine dihydrochloride salt](https://www.alsachim.com/17953-list_image/3-Amino-1H-1-2-4-triazole-1-alanine-dihydrochloride-salt.jpg)
3-Amino-1H-triazole-1-alanine dihydrochloride salt
Product Number: C2987
CAS number: 2990-18-3 free base
Synonyms: alpha,3-Diamino-1H-1,2,4-triazole-1-propanoic acid dihydrochloride
![[metabolites] 3-Hydroxyanthranilic acid](https://www.alsachim.com/16470-list_image/3-Hydroxyanthranilic-acid.jpg)
3-Hydroxyanthranilic acid
Product Number: C6553
CAS number: 548-93-6
Synonyms: Tryptophan metabolite
![[metabolites] 3-hydroxykynurenine](https://www.alsachim.com/20247-list_image/3-hydroxykynurenine.jpg)
![[reference-standards] 4-Hydroxyphenyllactic acid, racemic mixture](https://www.alsachim.com/18052-list_image/4-Hydroxyphenyllactic-acid-racemic-mixture.jpg)
4-Hydroxyphenyllactic acid, racemic mixture
Product Number: C3212
CAS number: 306-23-0
Synonyms: 2-Hydroxy-3-(4-hydroxyphenyl)propanoic acid, racemic mixture
![[metabolites] 4-Nitrososulfamethoxazole](https://www.alsachim.com/18362-list_image/4-Nitrososulfamethoxazole.jpg)
![[reference-standards] Acamprosate calcium salt](https://www.alsachim.com/15005-list_image/Acamprosate-calcium-salt.jpg)
![[building-blocks] Anthranilic acid](https://www.alsachim.com/14330-list_image/Anthranilic-acid.jpg)
![[reference-standards] Argininosuccinic acid disodium salt hydrate](https://www.alsachim.com/18929-list_image/Argininosuccinic-acid-disodium-salt-hydrate.jpg)
Argininosuccinic acid disodium salt hydrate
Product Number: C5391
CAS number: 918149-29-8
Synonyms: Arginosuccinic acid sodium salt hydrate
![[reference-standards] CJC 1295](https://www.alsachim.com/20155-list_image/CJC-1295.jpg)
CJC 1295
Product Number: C6214
CAS number: 446262-90-4
Synonyms: L-Tyrosyl-D-alanyl-L-alpha-aspartyl-L-alanyl-L-isoleucyl-L-phenylalanyl-L-threonyl-L-glutaminyl-L-seryl-L-tyrosyl-L-arginyl-L-lysyl-L-valyl-L-leucyl-L-alanyl-L-glutaminyl-L-leucyl-L-seryl-L-alanyl-L-arginyl-L-lysyl-L-leucyl-L-leucyl-L-glutaminyl-L-alpha-aspartyl-L-isoleucyl-L-leucyl-L-seryl-L-arginyl-N-[3-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)-1-oxopropyl]-L-lysinamide
![[reference-standards] Dapsone hydroxylamine](https://www.alsachim.com/18794-list_image/Dapsone-hydroxylamine.jpg)
![[reference-standards] L-Acetylcarnitine chloride salt](https://www.alsachim.com/18707-list_image/L-Acetylcarnitine-chloride-salt.jpg)
![[reference-standards] L-Alanine lithium salt](https://www.alsachim.com/14995-list_image/L-Alanine-lithium-salt.jpg)
![[reference-standards] L-Arginine](https://www.alsachim.com/15903-list_image/L-Arginine.jpg)
![[metabolites] L-Carnitine inner salt](https://www.alsachim.com/16369-list_image/L-Carnitine-inner-salt.jpg)
![[reference-standards] L-Citrulline](https://www.alsachim.com/14910-list_image/L-Citrulline.jpg)
![[reference-standards] L-Citrulline hydrochloride salt](https://www.alsachim.com/15911-list_image/L-Citrulline-hydrochloride-salt.jpg)
![[reference-standards] L-Homocitrulline](https://www.alsachim.com/20112-list_image/L-Homocitrulline.jpg)