您好，欢迎来到魔法化学网！
| CAS号 : | 841-77-0 |
精确质量 : | 252.16300 |
| 分子式 : | C17H20N2 |
logP : | 2.94790 |
| 分子量 : | 252.35400 |
PSA : | 15.27000 |
二苯甲基哌嗪 | |
Benzhydrylpiperazine | |
841-77-0 | |
C17H20N2 | |
252.35400 | |
15.27000 | |
2.94790 | |
252.16300 |
|
略黄色固体
|
|
|
115 °C
|
|
|
365.1ºC at 760 mmHg
|
|
|
90-93 °C
|
|
|
1.07 g/cm3
|
|
|
0.45 g/L (20 ºC)
|
|
|
Stable under normal temperatures and pressures.
|
|
|
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
|
|
TL6465000
|
|
|
3
|
|
|
S22-S24/25
|
|
|
I; II; III
|
|
|
2942000000
|
|
|
Xn
|
|
|
R22
|
|
2933990090
|
|
2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0% | |
2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
<p>1. 制备方法:将二苯甲醇9.2克加至浓盐酸53毫升中,搅拌回流1小时,冷却。用乙醚提取,无水硫酸钠干燥2小时,蒸出乙醚,残液转入滴液漏斗中备用。将无水哌嗪12.8克加至甲苯40毫升中,加热至80℃。滴加上述二苯氯甲烷,滴毕,保持80-90℃反应3小时,甲苯层用稀盐酸提取3次,提取液用氢氧化钠碱化,得淡黄色固体7.7克,收率61%,进一步提纯可用乙醇重结晶。</p> | |
<p>抗组胺类药物中间体。</p> |
