Benzalphthalides and broad spectrum sun screens

Details Benzalphthalides and broad spectrum sun screens Benzalphthalides and broad spectrum sun screens

1979-05-24

1982-06-08

Ore, Dale R.

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

424174, 542441, A61K 742

Patent

active

043339204

ABSTRACT:
Compositions containing a benzalphthalide, i.e. benzalphthalide or a substituted benzalphthalide, are very effective broad spectrum sun screens. They are prepared by reacting substituted or unsubstituted phthalic anhydride with the corresponding substituted or unsubstituted phenyl acetic acid.

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