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 Orotic acid
65-86-1

Orotic acid synthesis

12synthesis methods
-

Yield:65-86-1 92%

Reaction Conditions:

with 2,2'-azobis(isobutyronitrile);oxygen;cobalt(II) acetate;acetic acid at 80; for 15 h;

Steps:

1.a Example 1: Synthesis of 5-nitro-2,6-dioxo-1,3-dihydropyrimidine-4-carboxylic acid
To a 500 ml three-necked flask, 6-methylpyrimidine-2,4 (1H, 3H) -dione (10.0 g,(0.28 g, l.6 mmol), glacial acetic acid (250 mL), oxygen (flow rate: 6-10 m / s), tube diameter (flow rate: 6-10 m / s), AIBN (azobisisobutyronitrile, 0.26 g, l.6 mmol) (T6m2), heated to 80 ° C reaction for 15 hours, after the end of the reaction, into the saturated salt water, vacuum pumping, drying, recrystallization (good solvent chloroform,Poor solvent methanol) gave a white solid, 11.48, in a yield of 92.0%.

References:

Dalian Wanfu Pharmaceutical Co., Ltd.;Sun Qingfa CN106946887, 2017, A Location in patent:Paragraph 0023-0025

FullText

Orotic acid Related Search:

姜堰市| 清流县| 敖汉旗| 哈巴河县| 西青区| 扎鲁特旗| 鸡西市| 芦溪县| 金塔县| 古田县| 乐平市| 宝山区| 集安市| 乌审旗| 河北省| 洛浦县| 太谷县| 贡山| 林口县| 凯里市| 吴堡县| 武定县| 洛阳市| 四平市| 邯郸县| 普格县| 云安县| 广东省| 石楼县| 石阡县| 讷河市| 伊吾县| 景洪市| 桑植县| 利川市| 崇左市| 沽源县| 信宜市| 凤凰县| 新疆| 新乐市|