发明授权
US3428698A Production of 6,7-dimethyltetralin and 2,3-dimethylnaphthalene 失效
生产6,7-二甲基丙二酸和2,3-二甲基苯乙烯

Production of 6,7-dimethyltetralin and 2,3-dimethylnaphthalene
信息查询
0/0