← Back to patent-cliff list
CAS 80-48-8
4-Methylbenzenesulfonic acid methyl ester
Codes: (VI)860865-1-a
Application context (from source-drug indications)
HyperhidrosisGlycopyrrolate TosylateChronic obstructive pulmonary diseaseGlycopyrrolate TosylateAsthmaGlycopyrrolate TosylateChronic obstructive pulmonary diseaseFormoterol Fumarate/Glycopyrrolate
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Glycopyrrolate Tosylate | Tier C — Watch / trade | - |
| Formoterol Fumarate/Glycopyrrolate | 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.
(+/-)-Cyclopentylmandelic acid→2-Cyclopentyl-2-hydroxy-1-(1H-imidazol-1-yl)-2-phenylethanone→1-Methylpyrrolidin-3-ol→(1-Methylpyrrolidin-3-yl) 2-cyclopentyl-2-hydroxy-2-phenylacetate→(3R)-1-Methylpyrrolidin-3-yl (2S)-cyclopentyl(hydroxy)phenylacetate→4-Methylbenzenesulfonic acid methyl ester
(+/-)-Cyclopentylmandelic acid→2-Cyclopentyl-2-hydroxy-1-(1H-imidazol-1-yl)-2-phenylethanone→1-Methylpyrrolidin-3-ol→(1-Methylpyrrolidin-3-yl) 2-cyclopentyl-2-hydroxy-2-phenylacetate→(3R)-1-Methylpyrrolidin-3-yl (2S)-cyclopentyl(hydroxy)phenylacetate→4-Methylbenzenesulfonic acid methyl ester
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.