一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List Boc-Phe-Phe-OH
13122-90-2

Boc-Phe-Phe-OH synthesis

11synthesis methods
BOC-PHE-PHE-OME

13122-89-9

Boc-Phe-Phe-OH

13122-90-2

General procedure for the synthesis of Boc-L-phenylalanyl-phenylalanine from methyl (tert-butoxycarbonyl)phenylpropionyl-phenylpropionate: to a solution of methanol (20 ml) containing methyl 2-(2-((tert-butoxycarbonyl)amino)-3-phenylpropionamido)-3-phenylpropionate (2.0 g, 4.69 mmol), sodium hydroxide (0.38 g, 9.38 mmol) in water (10 ml) solution and the reaction temperature was maintained at 25-30°C. The reaction mixture was stirred at the same temperature for 1 hour. After completion of the reaction, methanol was removed by evaporation and the remaining aqueous layer was acidified with citric acid solution until the solid precipitated. The solid product was collected by filtration and dried to give Boc-L-phenylalanyl-phenylalanine as a white solid (1.89 g, 98% yield); ESI-MS: 413.2 (M + H).

Boc-Phe-Phe-OH Related Search:

邛崃市| 红原县| 庄河市| 阳春市| 综艺| 商南县| 朔州市| 开原市| 资中县| 永靖县| 关岭| 宜昌市| 陆河县| 措美县| 沽源县| 武川县| 保德县| 金秀| 游戏| 伊宁县| 仪征市| 鹰潭市| 沿河| 得荣县| 阳信县| 永济市| 和平区| 龙里县| 中超| 普兰店市| 梁平县| 沁源县| 崇明县| 邵阳县| 易门县| 阿荣旗| 会东县| 偃师市| 丰顺县| 山东省| 黄山市|