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CAS RN: 24807-55-4 | 产品编码: N0477
3-Nitro-1,2,4-triazole [Coupling Agent]
![Chemical Structure of 3-Nitro-1,2,4-triazole [Coupling Agent]](/medias/N0477.jpg?context=bWFzdGVyfHJvb3R8NDg5OTN8aW1hZ2UvanBlZ3xhRFl5TDJobE15ODRPVEl5TmpreE1qY3lOek0wTDA0d05EYzNMbXB3Wnd8NDUzNTRiNzAxNGRhNDUzZjZiZjRhNWQzZTkxOGM1N2ZjOTk4OWYyZDYxM2JiZDZlYThmZjJkZjBjYjk4OGRhNQ "3-Nitro-1,2,4-triazole [Coupling Agent]")
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技术规格
| Appearance | White to Light yellow powder to crystal |
| Purity(GC) | min. 98.0 % |
| Purity(Neutralization titration) | min. 98.0 % |
| NMR | confirm to structure |
物性（参考值）
| 熔点 | 214 °C |
GHS
| 象形图 |
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| 信号词 | Warning |
| 危险性说明 | H315 : Causes skin irritation. H319 : Causes serious eye irritation. |
| 防范说明 | P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ eye protection/ face protection. P302 + P352 : IF ON SKIN: Wash with plenty of water. P337 + P313 : If eye irritation persists: Get medical advice/ attention. P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P362 + P364 : Take off contaminated clothing and wash it before reuse. P332 + P313 : If skin irritation occurs: Get medical advice/ attention. |
相关法规
运输信息
| HS编码* | 2933.99-000 |
应用
A Condensing Agent
Experimental procedure: to a solution of N-Boc-Val-OH (160 mg, 0.74 mmol) and Et3N (140 µ L, 1.0 mmol) in THF is added 1 (395 mg, 0.44 mmol). The mixture is concentrated, coevaporated with pyridine and then with toluene, and redissolved in THF (4 mL). DIPEA (0.38 mL, 2.2 mmol), BOP-Cl (0.28 g, 1.1 mmol), and 3-nitro-1,2,4-triazole (0.13 g, 1.1 mmol) were added successively. The reaction mixture is stirred at rt for 1 h. Chromatography on silica gel with 0.5% Et3N and 20 － 100% EtOAc in hexanes gives 2 (0.39 g, 81% yield).
References
- Discovery of 4’-Chloromethyl-2’-deoxy-3’,5’-di‑O ‑isobutyryl-2’-fluorocytidine (ALS-8176), A First-in-Class RSV Polymerase Inhibitor for Treatment of Human Respiratory Syncytial Virus Infection
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