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 Cocarboxylase
154-87-0

Cocarboxylase synthesis

6synthesis methods
-

Yield:154-87-0 1.6 g

Reaction Conditions:

with hydrogenchloride in water at 40; pH=2 - 3;Reagent/catalyst;

Steps:

1-3; 1-3 Preparation of Thiamine Pyrophosphate

Steam the eluate at 40°C to 2-3ml, add concentrated hydrochloric acid to adjust the pH=2-3, use 2-3 times the amount of isopropanol to precipitate the product (1.6g), melting point: 238-241°C; purity: 96.55% .

References:

CN113402555,2021,A Location in patent:Paragraph 0043; 0049-0052; 0056-0058; 0062-0075

Cocarboxylase Related Search: