← Back to patent-cliff list
CAS 67305-26-4
(benzyl carbonic) 5-methylisoxazole-4-carboxylic anhydride
Codes: LEFU-006
Application context (from source-drug indications)
Rheumatoid arthritisLeflunomide狼疮肾炎LeflunomidePsoriatic arthritisLeflunomideMyelodysplastic syndromeLeflunomideLymphomaLeflunomideSolid tumourLeflunomide
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Leflunomide | 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.
4-(trifluoromethyl)aniline→(benzyl carbonic) 5-methylisoxazole-4-carboxylic anhydride
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.