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:

大连市| 吴忠市| 友谊县| 疏附县| 龙陵县| 广宁县| 涿鹿县| 莱阳市| 鹤峰县| 阜宁县| 沅江市| 双辽市| 临汾市| 香港 | 西昌市| 洛浦县| 平谷区| 西峡县| 体育| 丘北县| 汤阴县| 黔西| 开远市| 天门市| 丘北县| 娄烦县| 白银市| 崇明县| 林口县| 广宗县| 田林县| 苗栗县| 保德县| 大荔县| 民县| 建瓯市| 平凉市| 阳谷县| 稻城县| 岗巴县| 泸水县|