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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.
455 products
![[reference-standards] Tazobactam sodium salt](https://www.alsachim.com/15929-list_image/Tazobactam-sodium-salt.jpg)
![[reference-standards] Daptomycin](https://www.alsachim.com/15934-list_image/Daptomycin.jpg)
![[reference-standards] Kanamycin A sulfate salt](https://www.alsachim.com/15937-list_image/Kanamycin-A-sulfate-salt.jpg)
![[reference-standards] Amikacin disulfate
salt](https://www.alsachim.com/15938-list_image/Amikacin-disulfate-salt.jpg)
[13C6]-Sulfamethoxazole
Product Number: C3835
CAS number: 1196157-90-0
Synonyms: 4-Amino-N-(5-methyl-3-isoxazolyl)-benzenesulfonamide-13C6
![[reference-standards] Sulfamethoxazole](https://www.alsachim.com/16000-list_image/Sulfamethoxazole.jpg)
Sulfamethoxazole
Product Number: C3963
CAS number: 723-46-6
Synonyms: 4-Amino-N-(5-methyl-3-isoxazolyl)-benzenesulfonamide
![[reference-standards] Ceftaroline diformate salt](https://www.alsachim.com/16003-list_image/Ceftaroline-diformate-salt.jpg)
![[reference-standards] Pixantrone](https://www.alsachim.com/16004-list_image/Pixantrone.jpg)
Pixantrone
Product Number: C3968
CAS number: 144510-96-3
Synonyms: 6,9-bis[(2-aminoethyl)amino]-Benz[g]isoquinoline-5,10-dione
![[metabolites] Sulfamethoxazole hydroxylamine](https://www.alsachim.com/16009-list_image/Sulfamethoxazole-hydroxylamine.jpg)
[13C,2H3]-Ceftaroline diformate salt
Product Number: C4015
CAS number: 189345-04-8 unlabeled free base
[2H8]-Pixantrone diformate salt
Product Number: C4019
CAS number: 144510-96-3 unlabeled free base
Synonyms: 6,9-bis[(2-aminoethyl)amino]-Benz[g]isoquinoline-5,10-dione-d8 diformate salt
![[reference-standards] Tazobactam](https://www.alsachim.com/16219-list_image/Tazobactam.jpg)
![[metabolites] Des-Leucine-Vancomycin diformate salt](https://www.alsachim.com/16225-list_image/Des-Leucine-Vancomycin-diformate-salt.jpg)
![[reference-standards] Cefdinir](https://www.alsachim.com/16237-list_image/Cefdinir.jpg)