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 2-MERCAPTOIMIDAZOLE
872-35-5

2-MERCAPTOIMIDAZOLE synthesis

1synthesis methods
-

Yield:-

Reaction Conditions:

with hydrogenchloride

Steps:

1 EXAMPLE 1
The starting material is prepared as follows: To 39,230 ml of 2 N hydrochloric acid, 7,500 g of aminoacetaldehyde dimethylacetal are added during 45 minutes while stirring under nitrogen, followed by 6,932 g of potassium thiocyanate, which are added all at once. The mixture is heated to 98°, stirred for 2 hours and allowed to cool to room temperature overnight. The resulting suspension is stirred and cooled to 5°, filtered and the residue dried at 60°/5 mmHg, to yield the imidazole-2-thiol melting at 224°-226°.

References:

Ciba-Geigy Corporation US4391808, 1983, A

FullText

2-MERCAPTOIMIDAZOLE Related Search:

马龙县| 泸西县| 商丘市| 大方县| 昌乐县| 浮梁县| 依安县| 昌吉市| 平舆县| 新绛县| 徐闻县| 桃园市| 荣昌县| 秭归县| 富民县| 凌云县| 吐鲁番市| 江口县| 榆社县| 阜宁县| 田阳县| 弥渡县| 金川县| 苗栗县| 观塘区| 丘北县| 大荔县| 东乌珠穆沁旗| 教育| 乐东| 梁河县| 河池市| 安仁县| 金湖县| 客服| 石泉县| 阳山县| 宜州市| 阿勒泰市| 冕宁县| 余姚市|