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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.
60 products
![[metabolites] Olapatadine-N-oxide](https://www.alsachim.com/17578-list_image/Olapatadine-N-oxide.jpg)
[13C,2H3]-Doxylamine
Product Number: C1351
CAS number: 469-21-6 unlabeled
Synonyms: [13C,2H3]-Noctyl, [13C,2H3]-Lidène, [13C,2H3]-Donormyl, [13C,2H3]-2-[a-[2-(Dimethylamino)ethoxy]-a-methylbenzyl]pyridine, [13C,2H3]-LS 127
![[reference-standards] Triprolidine Z isomer hydrochloride salt](https://www.alsachim.com/19543-list_image/Triprolidine-Z-isomer-hydrochloride-salt.jpg)
[2H8]-Triprolidine Z isomer hydrochloride salt
Product Number: C6437
CAS number: 51657-91-1 unlabeled
[2H8]-Triprolidine Z isomer oxalate salt
Product Number: C6438
CAS number: 14343-87-4 unlabeled
Synonyms: [2H8]-(E)-2-[3-(1-Pyrrolidinyl)-1-p-tolylpropenyl]pyridine oxalate, Z isomer
![[reference-standards] Pheniramine maleate salt](https://www.alsachim.com/16595-list_image/Pheniramine-maleate-salt.jpg)
![[reference-standards] Promethazine hydrochloride salt](https://www.alsachim.com/16606-list_image/Promethazine-hydrochloride-salt.jpg)
[2H6]-Fludrocortisone
Product Number: C5525
CAS number: 127-31-1 unlabeled
Synonyms: Fluorocortisone-d6
![[reference-standards] Fludrocortisone](https://www.alsachim.com/16685-list_image/Fludrocortisone.jpg)
![[reference-standards] Fludrocortisone acetate](https://www.alsachim.com/16711-list_image/Fludrocortisone-acetate.jpg)
Fludrocortisone acetate
Product Number: C5616
CAS number: 514-36-3
Synonyms: 9-Fluorohydrocortisone acetate, Fluorocortisone acetate
![[metabolites] 21-Deoxycortisol](https://www.alsachim.com/16882-list_image/21-Deoxycortisol.jpg)
[13C4]-11-Deoxycortisol
Product Number: C6669
CAS number: 152-58-9 unlabeled
Synonyms: 11-Deoxy-17-hydroxycorticosterone-13C4, Reichstein's substance S-13C4, 17,21-Dihydroxyprogesterone-13C4, Cortexolone-13C4
![[reference-standards] Chloropyramine hydrochloride salt](https://www.alsachim.com/17408-list_image/Chloropyramine-hydrochloride-salt.jpg)