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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.
181 products
![[metabolites] (R)-Licarbazepine](https://www.alsachim.com/17311-list_image/-R-Licarbazepine.jpg)
![[reference-standards] 10-Demethylcolchicine](https://www.alsachim.com/18996-list_image/11-Demethylcolchicine.jpg)
![[reference-standards] 2-Demecolchicine](https://www.alsachim.com/18993-list_image/2-Demecolchicine.jpg)
![[metabolites] 3-Demethylcolchicine](https://www.alsachim.com/18987-list_image/3-Demethylcolchicine.jpg)
![[reference-standards] 4'-Demethylepipodophyllotoxin](https://www.alsachim.com/19336-list_image/4-Demethylepipodophyllotoxin.jpg)
4'-Demethylepipodophyllotoxin
Product Number: C6030
CAS number: 6559-91-7
Synonyms: 4'-DMEP, (5S,5aR,8aR,9R)-5-Hydroxy-9-(4-hydroxy-3,5-dimethoxyphenyl)-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[5,6-f][1,3]benzodioxol-8-one
![[reference-standards] 5-Hydroxy-saxagliptin](https://www.alsachim.com/19792-list_image/5-Hydroxy-saxagliptin.jpg)
![[metabolites] 6-α-Hydroxypaclitaxel](https://www.alsachim.com/15964-list_image/6-alpha-Hydroxypaclitaxel.jpg)
6-α-Hydroxypaclitaxel
Product Number: C3843
CAS number: 153212-75-0
Synonyms: 6-a-Hydroxypaclitaxel, 6-alpha-Hydroxytaxol
![[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] Alogliptin](https://www.alsachim.com/18167-list_image/Alogliptin.jpg)
![[reference-standards] Atorvastatin calcium salt](https://www.alsachim.com/14756-list_image/Atorvastatin-calcium-salt.jpg)
![[reference-standards] Atorvastatin lactone](https://www.alsachim.com/15436-list_image/Atorvastatin-lactone.jpg)
![[reference-standards] Benztropine mesylate salt](https://www.alsachim.com/19732-list_image/Benztropine-mesylate-salt.jpg)
![[reference-standards] Bezafibrate](https://www.alsachim.com/19933-list_image/Bezafibrate.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] Colchicine](https://www.alsachim.com/16573-list_image/Colchicine.jpg)
![[reference-standards] CT-99021](https://www.alsachim.com/19223-list_image/CT-99021.jpg)
![[reference-standards] D-64131](https://www.alsachim.com/19372-list_image/D-64131.jpg)