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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.
583 products
![[metabolites] 4-Methylpropranolol](https://www.alsachim.com/14953-list_image/4-Methylpropranolol.jpg)
![[metabolites] 4-Hydroxypropranolol sulfate potassium salt](https://www.alsachim.com/14997-list_image/4-Hydroxypropranolol-sulfate-potassium-salt.jpg)
![[metabolites] 4-Hydroxypropranolol-β-D-glucuronide](https://www.alsachim.com/17491-list_image/4-Hydroxypropranolol-beta-D-glucuronide.jpg)
4-Hydroxypropranolol-β-D-glucuronide
Product Number: C1441
CAS number: 94731-13-2
Synonyms: 4-Hydroxypropranolol-beta-D-glucuronide
![[metabolites] Propranolol glucuronide sodium salt](https://www.alsachim.com/14999-list_image/Propranolol-glucuronide-sodium-salt.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
![[reference-standards] Vancomycin hydrochloride salt](https://www.alsachim.com/15105-list_image/Vancomycin-hydrochloride-salt.jpg)
![[reference-standards] Biotin](https://www.alsachim.com/15205-list_image/Biotin.jpg)
![[reference-standards] trans-Caffeoyl-L-tryptophan sodium salt](https://www.alsachim.com/15282-list_image/trans-Caffeoyl-L-tryptophan-sodium-salt.jpg)
[13C,2H3]-Epinephrine hydrochloride salt, racemic mixture
Product Number: C2238
CAS number: 1261397-10-7 free base
Synonyms: Adrenaline-13C-d3 hydrochloride, racemic mixture
![[metabolites] trans-Caffeoyl-L-tryptophan-methylester](https://www.alsachim.com/15306-list_image/trans-Caffeoyl-L-tryptophan-methylester.jpg)
trans-Caffeoyl-L-tryptophan-methylester
Product Number: C2252
CAS number: N/A
Synonyms: (S,E)-Methyl 2-(3-(3,4-dihydroxyphenyl)acrylamido)-3-(1H-indol-3-yl)propanoate
[13C6]-5-Hydroxymethylfurfuraldehyde
Product Number: C2382
CAS number: 1219193-98-2
Synonyms: 5-HMF-13C6
[13C2,15N3]-Amitrole
Product Number: C2394
CAS number: 61-82-5 unlabeled
Synonyms: Herbizole-13C2-15N3, Cytrol-13C2-15N3, Azolan13C2-15N3, Azaplant-13C2-15N3, Amizol-13C2-15N3, Aminotriazole-13C2-15N3, Amerol-13C2-15N3
[2H4]-trans-Caffeoyl-L-tryptophan sodium salt
Product Number: C2417
CAS number: 109163-69-1 unlabeled free base
[13C2,15N]-Acetaminophen
Product Number: M251
CAS number: 360769-21-7
Synonyms: Acetoaminophenol-13C-15N, N-(4-Hydroxyphenyl)-acetamide-13C-15N, N-Acetyl p-aminophenol-13C-15N, Paracetamol-13C-15N
[13C]-Arachidonic acid
Product Number: C155
CAS number: 506-32-1 unlabeled
Synonyms: (5Z,8Z,11Z,14Z)-5,8,11,14-Eicosatetraenoic acid-13C