Products Description
Risdiplam Intermediate(CAS: 2133298-74-3) is a key advanced intermediate of Risdiplam (Boc-protected type), belonging to the high-end pharmaceutical synthesis building blocks. The molecule has a Boc protection structure, with high structural purity, controllable impurities, and good stability. It is the core process intermediate for preparing the rare disease drug Risdiplam.
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Risdiplam-related products |
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2133298-74-3 |
Risdiplam intermediates/Risdiplam impurities |
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2133298-73-2 |
Risdiplam intermediates |
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1825352-86-0 |
Risdiplam intermediates |
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2133298-72-1 |
Risdiplam intermediates |
Products Specification
| Product name |
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| CAS NO | 2133298-74-3 | |
| ITEM NO | M273 | |
| Appearance | Bright yellow powder | |
| Purity | 99.5% | |
| Density | 1.39±0.1 g/cm3(Predicted) | |
| Package | 100g/1kg/10kg etc. | |
| Delivery | 2-3days | |
| Storage | Store at 2-8℃ in a sealed and dark environment for drying. | |
| MSDS/COA/TDS | Connect us |
Products Application
Mainly used for the synthesis of Risdiplam, a drug for treating spinal muscular atrophy (SMA). It is applicable for the research and development of pharmaceutical intermediates, process optimization, and the large-scale production of raw materials.

FAQ
Q: How to get Risdiplam from this intermediate?
A: Remove Boc‑group under acidic condition followed by purification to obtain Risdiplam API.
Q: Is 2133298‑74‑3 a key intermediate for Risdiplam?
A: Yes, it is the key late‑stage Boc‑protected intermediate for synthesizing Risdiplam API.
Q: What are the storage requirements for Risdiplam Boc‑protected intermediate?
A: Store sealed at 2‑8°C, keep dry, away from acid and light.
Q: Could CAS 2133298‑74‑3 degrade under acidic conditions?
A: Yes, it is acid‑sensitive and will degrade via Boc‑deprotection in acidic environment.
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