| 查看: 482 | 回复: 2 | ||
[求助]
帮忙找下绿原酸性质
|
百度百科上的就不要粘贴过来了，其它的一些性质麻烦知道的告知 |
回复此楼» 猜你喜欢
2026年辅料登记预告
已经有1人回复
-
SPguide®：小鼠体内脾脏转染的一键解决方案
已经有0人回复
-
药理学论文润色/翻译怎么收费?
已经有135人回复
-
高效肺靶向RNA转染，加速肺部RNA药物开发
已经有2人回复
-
二糖的糖脂，合成后sephadex LH-20分离不出来，求助
已经有1人回复
-
酰胺脱乙酰基
已经有13人回复
-
见刊快的中文核心期刊
已经有2人回复
-
南方医科大学珠江医院肖计生课题组招收博士生 （2026年入学）
已经有2人回复
-
一志愿天中医中药学专硕，希望有b区的老师可以考虑一下我
已经有0人回复
-
349药学专硕105500求调剂
已经有0人回复
-
调剂
已经有0人回复
» 本主题相关价值贴推荐，对您同样有帮助:
- 最实用的高分子材料热分析曲线资料
已经有588人回复
- 如何在FDA网站上查找药品的理化性质
已经有5人回复
- 烦请咨询一下，自收自支的事业单位性质
已经有4人回复
痴夷子皮
版主 (文坛精英)
老痞
- DRDEPI: 8
- 应助: 2016 (讲师)
- 贵宾: 5.368
- 金币: 54487.3
- 散金: 41688
- 红花: 303
- 沙发: 1206
- 帖子: 32611
- 在线: 4303.7小时
- 虫号: 674536
- 注册: 2008-12-14
- 性别: GG
- 专业: 无神论
- 管辖: 人文社科
【答案】应助回帖
★ ★
感谢参与，应助指数 +1
从头开始: 金币+2, 辛苦了 2012-08-13 09:53:59
感谢参与，应助指数 +1
从头开始: 金币+2, 辛苦了 2012-08-13 09:53:59
|
Title: Chlorogenic Acid CAS Registry Number: 327-97-9 CAS Name: [1S-(1a,3b,4a,5a)]-3-[[3-(3,4-Dihydroxyphenyl)-1-oxo-2-propenyl]oxy]-1,4,5-trihydroxycyclohexanecarboxylic acid Additional Names: 1,3,4,5-tetrahydroxycyclohexanecarboxylic acid 3-(3,4-dihydroxycinnamate); 3-caffeoylquinic acid; 3-(3,4-dihydroxycinnamoyl)quinic acid Molecular Formula: C16H18O9 Molecular Weight: 354.31 Percent Composition: C 54.24%, H 5.12%, O 40.64% Literature References: Important factor in plant metabolism. Isoln from green coffee beans: Freudenberg, Ber. 53, 237 (1920). Chlorogenic acid and its isomers isochlorogenic acid and neochlorogenic acid occur also in fruit, leaves and other tissues of dicotyledenous plants: Sondheimer, Arch. Pharm. 293, 721 (1960). Forms caffeic acid on hydrolysis: Fiedler, Arzneim.-Forsch. 4, 41 (1954). Structure: Fischer, Dangschat, Ber. 65, 1037 (1932); Barnes et al., J. Am. Chem. Soc. 72, 4178 (1950); Corse et al., Tetrahedron 18, 1207 (1962). Synthesis: Panizzi et al., Gazz. Chim. Ital. 86, 913 (1956). Derivative Type: Hemihydrate Properties: Needles from water. Becomes anhydr at 110°. mp 208°. [a]D26 -35.2° (c = 2.8). pKa (27°) 2.66. Rf values: Fiedler, loc. cit. Soly in water at 25° about 4%, much more sol in hot water. Alkaline solns acquire an orange color. Freely sol in alcohol, acetone. Very slightly sol in ethyl acetate. Heating with dil HCl yields caffeic acid. Forms a black compd with iron, said to be responsible for the blackening of cut and cooked potatoes: Chem. Ind. (London) 1958, 627. Melting point: mp 208° pKa: pKa (27°) 2.66 Optical Rotation: [a]D26 -35.2° (c = 2.8) Derivative Type: 3¢-Methyl ether Additional Names: 3-Feruloylquinic acid Molecular Formula: C17H20O9 Molecular Weight: 368.34 Percent Composition: C 55.43%, H 5.47%, O 39.09% Properties: Crystals from ethyl acetate + petr ether, mp 196-197°. [a]D25 -42.8° (ethanol). uv max (ethanol): 325 nm (e 19,200). Melting point: mp 196-197° Optical Rotation: [a]D25 -42.8° (ethanol) Absorption maximum: uv max (ethanol): 325 nm (e 19,200 |
2楼2012-08-13 09:12:48
把百科的中文翻译过来，就可以了么 3楼2012-08-13 09:20:19
10