成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

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 Ursodeoxycholic acid
128-13-2

Ursodeoxycholic acid synthesis

6synthesis methods
-

Yield:128-13-2 99%

Reaction Conditions:

with methanol;sodium methylate at 25;

Steps:

2 Example 2

The compound of Formula 2 (38.8 g, 95.6 mmol) was dissolved in a 2 mol/L sodium methoxide/methanol solution (200 mL), and the reaction was stopped after stirring at room temperature for 3 hours. 200 mL of ethyl acetate and 200 mL of water were added for extraction. The organic phase was washed three times with 100 mL of saturated brine and dried. Concentration of ethyl acetate was performed to remove the solvent, and the compound of Formula 1 was obtained as a white foamy solid (37.1 g, 99%). %). Recrystallize with 80% ethanol in water to obtain a white crystalline powder.

References:

CN107793464,2018,A Location in patent:Paragraph 0006; 0026; 0027

Ursodeoxycholic acid Related Search: