← Back to patent-cliff list
CAS 3978-80-1
(tert-butoxycarbonyl)-L-tyrosine
Codes: GADO-003
Application context (from source-drug indications)
Contrast imagingGadoxetate DisodiumDiagnostic agentGadoxetate DisodiumProstate cancerGadoxetate DisodiumCastration-resistant prostate cancerGadoxetate DisodiumLiver cancerGadoxetate DisodiumHepatocellular carcinomaGadoxetate Disodium
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Gadoxetate Disodium | Tier C — Watch / trade | - |
Position in synthesis routes (up/downstream chain)
Ordered by route registration; left → right is the synthesis direction. The highlighted node is the current CAS; others link to their own profiles.
L-tyrosine→(tert-butoxycarbonyl)-L-tyrosine→(S)-2-((tert-butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid→tert-butyl (S)-(1-(4-ethoxyphenyl)-3-hydroxypropan-2-yl)carbamate→(S)-2-((tert-butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propyl methanesulfonate→tert-butyl (S)-(1-((2-aminoethyl)amino)-3-(4-ethoxyphenyl)propan-2-yl)carbamate→(S)-N1-(2-aminoethyl)-3-(4-ethoxyphenyl)propane-1,2-diamine hydrochloride→di-tert-butyl 2,2'-((2-((2-(bis(2-(tert-butoxy)-2-oxoethyl)amino)-3-(4-ethoxyphenyl)propyl)(2-(tert-butoxy)-2-oxoethyl)amino)ethyl)azanediyl)(S)-diacetate→Gadoxetate sodium
Intermediates available on this site
No listed intermediates for this target yet — send an RFQ directly and it will enter our matching pool.
This is a CAS-level registry record: registrations across routes are merged. Supplier offers and buyer demands will be matched on this CAS as the primary key.