← Back to patent-cliff list
CAS 909567-52-8
N,N'-Bis[(2S)-1-[[tert-butyl(dimethyl)silyl]oxy]butan-2-yl]ethanediamide
Codes：Ethambutol Hydrochloride-011
Application context (from source-drug indications)
结核分枝杆菌感染盐酸乙胺丁醇/利福平/异烟肼肺结核盐酸乙胺丁醇
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Ethambutol Hydrochloride/Rifampicin/IsoniazidEthambutol Hydrochloride/Rifampicin/Isoniazid | Tier C — Watch / trade | - |
| Ethambutol HydrochlorideEthambutol Hydrochloride | 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.
(R)-1,2-Butanediol→O-TBDMS-1,2(R)-butanediol→(2S)-1-[[tert-Butyl(dimethyl)silyl]oxy]butan-2-yl methanesulfonate→[[(2S)-2-Azidobutyl]oxy](tert-butyl)dimethylsilane→(2S)-1-[[tert-Butyl(dimethyl)silyl]oxy]butan-2-amine→Oxalyl dichloride→N,N'-Bis[(2S)-1-[[tert-butyl(dimethyl)silyl]oxy]butan-2-yl]ethanediamide
(R)-1,2-Butanediol→O-TBDMS-1,2(R)-butanediol→(2S)-1-[[tert-Butyl(dimethyl)silyl]oxy]butan-2-yl methanesulfonate→[[(2S)-2-Azidobutyl]oxy](tert-butyl)dimethylsilane→(2S)-1-[[tert-Butyl(dimethyl)silyl]oxy]butan-2-amine→Oxalyl dichloride→N,N'-Bis[(2S)-1-[[tert-butyl(dimethyl)silyl]oxy]butan-2-yl]ethanediamide
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.