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CAS RN: 3849-21-6 | 产品编码: E0847
Ethyl Cyano(hydroxyimino)acetate
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技术规格
| Appearance | White to Almost white powder to crystal |
| Purity(GC) | min. 98.0 % |
| Melting point | 131.0 to 135.0 °C |
物性（参考值）
| 熔点 | 133 °C |
| 溶解性（可溶于） | 甲醇 |
GHS
| 象形图 |
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| 信号词 | Warning |
| 危险性说明 | H302 + H312 + H332 : Harmful if swallowed, in contact with skin or if inhaled. H315 : Causes skin irritation. H319 : Causes serious eye irritation. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P261 : Avoid breathing dust/ fume/ gas/ mist/ vapors/ spray. P270 : Do not eat, drink or smoke when using this product. P271 : Use only outdoors or in a well-ventilated area. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection. 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. P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth. P302 + P352 + P312 : IF ON SKIN: Wash with plenty of water.Call a POISON CENTER/doctor if you feel unwell. P304 + P340 + P312 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor if you feel unwell. |
相关法规
运输信息
| HS编码* | 2928.00-000 |
应用
Oxyma: An Efficient Additive for Peptide Synthesis to Replace HOBt and HOAt
Experimental procedure4): a mixture of 1 (0.12 mmol), EDC·HCl (28 mg, 0.15 mmol, 1.2 eq.), Oxyma (20 mg, 0.15 mmol, 1.2 eq.), and DIEA (52 µL, 0.29 mmol, 2.4 eq.) in DMF (1.2 mL) is stirred for 15 min, and then 2 (0.12 mmol) is added. The mixture is stirred at room temperature for 20 hr and diluted with EtOAc. The organic phase is washed with 0.5 mol/L HCl, 5% LiCl, saturated aqueous NaHCO3, and brine, dried over Na2SO4 and concentrated in vacuo. The crude product is purified with silica column chromatography eluting with 3:2 hexanes:EtOAc to yield 3 (48 mg, 0.10 mmol, 82% yield) as a white solid.
References
- 1)Oxyma: An Efficient Additive for Peptide Synthesis to Replace the Benzotriazole-Based HOBt and HOAt with a Lower Risk of Explosion[1]
- 2)Sulfonate esters of 1-hydroxypyridin-2(1H)-one and ethyl 2-cyano-2-(hydroxyimino)acetate (oxyma) as effective peptide coupling reagents to replace 1-hydroxybenzotriazole and 1-hydroxy-7-azabenzotriazole
- 3)Ethyl 2-cyano-2-(hydroxyimino)acetate (Oxyma): an efficient and convenient additive used with tetramethylfluoroformamidinium hexafluorophosphate (TFFH) to replace 1-hydroxybenzotriazole (HOBt) and 1- hydroxy-7-azabenzotriazole (HOAt) during peptide synthesis
- 4)Heterogeneous H-Bonding in a Foldamer Helix
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