Phthalic Acids - ț̢
A group of compounds that has the general structure of a dicarboxylic acid-substituted benzene ring. The ortho-isomer is used in dye manufacture. (Dorland, 28th ed)
Synonyms : Acids, Phthalic
Phthalic Anhydrides - ț̢
Phthalic acid anhydrides. Can be substituted on any carbon atom. Used extensively in industry and as a reagent in the acylation of amino- and hydroxyl groups.
Phthirus - ț̢
Lice of the genus Phthirus, family Pediculidae. Phthirus pubis, the crab louse, is usually acquired by sexual contact or contact with infected objects. It is found most frequently in the pubic hair, but also on eyebrows, eyelashes, or on the axillary hairs.