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CAS 1281969-10-5
O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-L-threonine
Codes: Atosiban-121
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.
Methyl S-(acetamidomethyl)-N-(tert-butoxycarbonyl)-L-cysteinyl-L-prolinate→Prop-2-en-1-yl S-(acetamidomethyl)-N-(tert-butoxycarbonyl)-L-cysteinyl-L-prolinate→Methyl S-(acetamidomethyl)-L-cysteinyl-L-prolinate→Prop-2-en-1-yl S-(acetamidomethyl)-L-cysteinyl-L-prolinate→N2-(tert-Butoxycarbonyl)-N-(triphenylmethyl)-L-asparagine→Methyl N2-(tert-butoxycarbonyl)-N-(triphenylmethyl)-L-asparaginyl-S-(acetamidomethyl)-L-cysteinyl-L-prolinate→Prop-2-en-1-yl N2-(ethoxycarbonyl)-N-(triphenylmethyl)-L-asparaginyl-S-(acetamidomethyl)-L-cysteinyl-L-prolinate→Trifluoroacetic acid methyl N-(triphenylmethyl)-L-asparaginyl-S-(acetamidomethyl)-L-cysteinyl-L-prolinate→Trifluoroacetic acid prop-2-en-1-yl N-(triphenylmethyl)-L-asparaginyl-S-(acetamidomethyl)-L-cysteinyl-L-prolinate→O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-L-threonine→Methyl O-ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-L-threonyl-N-(triphenylmethyl)-L-asparaginyl-S-(acetamidomethyl)-L-cysteinyl-L-prolinate→Prop-2-en-1-yl O-ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-L-threonyl-N-(triphenylmethyl)-L-asparaginyl-S-(acetamidomethyl)-L-cysteinyl-L-prolinate→O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-L-threonyl-N-(triphenylmethyl)-L-asparaginyl-S-(acetamidomethyl)-L-cysteinyl-L-proline
Methyl N-(tert-butoxycarbonyl)-L-isoleucyl-L-threoninate→L-Threonine→Methyl L-threoninate hydrogen chloride→Methyl L-isoleucyl-L-threoninate→N-(tert-Butoxycarbonyl)-O-ethyl-D-tyrosine→Methyl N-(tert-butoxycarbonyl)-O-ethyl-D-tyrosyl-L-isoleucyl-L-threoninate→Methyl O-ethyl-D-tyrosyl-L-isoleucyl-L-threoninate→Methyl O-ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-L-threoninate→O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-L-threonine→S-(Trityl)-mercapto propionic acid→N-(tert-Butoxycarbonyl)-L-isoleucine
Intermediates available on this site
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