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CAS 1632400-58-8
L-Isoleucyl-O-benzyl-L-threonyl-L-asparaginyl-S-benzyl-L-cysteinyl-L-proline trifluoroacetate
Codes: Atosiban-043
Application context (from source-drug indications)
产科分娩（早产）Atosiban acetate早产（孕37周前）Atosiban acetateEndometriosisAtosiban acetate
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Atosiban acetate | 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.
O-Benzyl-L-threonyl-L-asparaginyl-S-benzyl-L-cysteinyl-L-proline trifluoroacetate→3-(Benzylsulfanyl)-N-[(2R)-3-(4-ethoxyphenyl)-1-hydrazino-1-oxopropan-2-yl]propanamide→2,5-Dioxopyrrolidin-1-yl N-(tert-butoxycarbonyl)-L-isoleucinate→N-(tert-Butoxycarbonyl)-L-isoleucine→N-(tert-Butoxycarbonyl)-L-isoleucyl-O-benzyl-L-threonyl-L-asparaginyl-S-benzyl-L-cysteinyl-L-proline→L-Isoleucyl-O-benzyl-L-threonyl-L-asparaginyl-S-benzyl-L-cysteinyl-L-proline trifluoroacetate→N-[3-(Benzylsulfanyl)propanoyl]-O-ethyl-D-tyrosyl-L-isoleucyl-O-benzyl-L-threonyl-L-asparaginyl-S-benzyl-L-cysteinyl-L-proline→1-Hydroxy-2,5-pyrrolidinedione→O-Benzyl-N-(tert-butoxycarbonyl)-L-threonyl-L-asparaginyl-S-benzyl-L-cysteinyl-L-proline
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