CAS: 5203-77-0; 1,3-Dimethyl-1H-Pyrazol-5-Ol

相似化合物

129922-58-3 33641-15-5 122431-37-2

上下游产品

CAS号141-97-9 乙酰乙酸乙酯 | CAS号60-34-4 甲基肼 | CAS号4341-76-8 2-丁炔酸乙酯

专利信息

专利号:US-4118384-A
优先权日:1976-02-21
标题 :Process for preparation of azo dyestuffs by coupling in presence of aromatic sulphonic acid-formaldehyde reaction product
发明人：MOLLS HANS-HEINZ; SCHIWY WILLY; HORNLE REINHOLD; NEBELING REINHARD
权利人:BAYER AG
摘要:Dyestuff dispersions and dyestuff solutions free from salt or at least having a low salt content are obtained in that the diazotization is carried out with addition of free dispersing agent acid to which, after the synthesis, either no basic agents are added or basic agents are added only up to a pH value of 3. The disclosed process gives dyestuff compositions of low salt content and results in readily dispersible dyestuffs when water insoluble dyestuffs are prepared and stable solutions when water soluble dyestuffs are prepared. The process is widely applicable and chemical constitution of the dyestuffs is conventional.

专利号:EP-4116291-A1
优先权日:2020-03-04
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专利号:US-2023125494-A1
优先权日:2020-03-04
标题 :Synthesis of novel ep4 antagonist and use in cancer and inflammation

专利号:CN-113354585-A
优先权日:2020-03-04
标 题:Synthesis of novel EP4 antagonists and their use in cancer and inflammation

专利号:CN-110372594-B
优先权日:2019-08-19
标题:Synthesis method of 1, 3-dimethyl-1H-pyrazole-4-formic acid

专利号:CN-112574194-A
优先权日:2019-09-29
标 题:Synthesis and Application of Pyrimidine Salts