发明名称 |
BIS-(2,4-DINITROPHENYL) -METHYL-PYRIDINIUM COMPOUNDS |
摘要 |
Bis-(2,4-dinitrophenyl)-methylpyridinium compounds useful as a pH indicator or for the detection of ammonia having the formula: <IMAGE> wherein one of R1 and R2 is a bis-(2,4-dinitrophenyl)-methyl radical and the other is a lower alkyl radical; R2 can also be hydrogen atom or trifluoromethyl; R3 and R4 are hydrogen or, together with the carbon atoms to which they are attached, represent a benzene ring; and X(-) is an appropriate acid anion or said compounds are betaines. |
申请公布号 |
AU4693079(A) |
申请公布日期 |
1979.11.29 |
申请号 |
AU19790046930 |
申请日期 |
1979.05.11 |
申请人 |
BOEHRINGER MANNHEIM GMBH |
发明人 |
ANSELM ROTHE;WERNER GUTHLEIN;WALTER RITTERSDORF;WOLFGANG WERNER |
分类号 |
C07D213/04;C07D213/20;C07D213/24;C07D213/26;C07D215/10;C07D217/10;C09B11/00;C09B11/26;G01N31/22;G01N33/62;G01N33/84 |
主分类号 |
C07D213/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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