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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.

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[reference-standards] GS-7171

GS-7171

Product Number: C6104

CAS number: 379270-36-7

Synonyms: N-[[[(1R)-2-(6-Amino-9H-purin-9-yl)-1-methylethoxy]methyl]phenoxyphosphinyl]-1-methylethyl ester-L-alanine

[reference-standards] GS-7171 fumarate salt

GS-7171 fumarate salt

Product Number: C6138

CAS number: 390409-17-3

Synonyms: N-[[[(1R)-2-(6-Amino-9H-purin-9-yl)-1-methylethoxy]methyl]phenoxyphosphinyl]-1-methylethyl ester-L-alanine fumarate

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[2H6]-GS-7171

Product Number: C6140

CAS number: 379270-36-7 unlabeled

Synonyms: [2H6]-N-[[[(1R)-2-(6-Amino-9H-purin-9-yl)-1-methylethoxy]methyl]phenoxyphosphinyl]-1-methylethyl ester-L-alanine

[reference-standards] Telbivudine

Telbivudine

Product Number: C6995

CAS number: 3424-98-4

Synonyms: 2'-Deoxy-L-thymidine, Epavudine, L-Thymidine, Sebivo

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[13C,15N2]-Telbivudine

Product Number: C6996

CAS number: 3424-98-4 unlabeled

Synonyms: [13C, 15N2]-2'-Deoxy-L-thymidine, [13C, 15N2]-Epavudine, [13C, 15N2]-L-Thymidine, [13C, 15N2]-Sebivo

[reference-standards] Danoprevir

Danoprevir

Product Number: C5611

CAS number: 850876-88-9

Synonyms: Intermune ITMN-191, ITMN B, ITMN 191, EBP 521

[reference-standards] Elbasvir

Elbasvir

Product Number: C5739

CAS number: 1370468-36-2

Synonyms: MK-8742, MK8742

[metabolites] Sofosbuvir metabolite GS-566500

Sofosbuvir metabolite GS-566500

Product Number: C5767

CAS number: 1233335-78-8

Synonyms: PSI 352707, N-[(2'R)-2'-Deoxy-2'-fluoro-2'-methyl-5'-uridylyl]-L-alanine, O-Desisopropyl-O-Desphenyl Sofosbuvir