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Highly regiospecific mononitration of phenol and substituted phenols was accomplished employing a metal nitrate and a catalytic amount of KHSO4 in acetonitrile. An exclusive ortho-selectivity was observed with excellent yields. A variety of metal nitrates were used to obtain o-nitrophenols exclusively...
Kh04代表的黄金纯度，是指含金量千分数不小于999的金金属。千足金，含金量千分数不小于999，是首饰成色命名中的最高值。
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KH Group Oyj Pörssitiedote 21.8.2024 klo 16.30 KH Group Oyj: Arvopaperimarkkinalain 9 luvun 5 pykälän mukainen liputusilmoitus: Mikko Laakkosen omistus KH Group Oyj:ssä on ylittänyt 10 % rajan, suora ja välillinen omistus yhteensä 15,04 % ...
Kh是千足金，04表示含碳量
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kh代表千足金金属。含金量千分数不小于999的称为千足金,是首饰成色命名中最高值。
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