| 摘要 |
<p>Composition in pharmaceutical support contains an inhibitor of formula: (in which R is methyl or halogen, R' is H, methyl or halogen and each R" is OH, methyl or halogen, n is 1, 2, or 3 and when n is 2 or 3, the R" may be identical or different), e.g. 2,3',4,6-tetramethyl-4'-hydroxyfluorobenzophenone, which may be prepared by reaction of an aromatic acid halide with an aromatic hydrocarbon in the presence of anhydrous aluminium chloride.</p> |
