天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
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 Allantoin
97-59-6

Allantoin synthesis

7synthesis methods
-

Yield:97-59-6 89.3%

Reaction Conditions:

with Co[PyPS]2Mo11VO40 at 90; for 10 h;Microwave irradiation;Temperature;Reagent/catalyst;

Steps:

1-4; 1-2 A method for producing allantoin for cosmetics is achieved through the following specific steps:

Add 0.1 mol glyoxylic acid solution (mass concentration of 50%) and 0.3 mol urea into the microwave reactor, and then add 2.0g 2 catalyst to it, react the reaction mixture at 90°C for 10 hours, and then filter the catalyst. , After recrystallizing the obtained product, the allantoin product was obtained, and the yield was 89.3%.

References:

CN111848522,2020,A Location in patent:Paragraph 0016-0017; 0019-0020; 0022-0023; 0025-0026; 0029

Allantoin Related Search: