Definition: Two-ring crystalline hydrocarbons isolated from coal tar. They are used as intermediates in chemical synthesis, as insect repellents, fungicides, lubricants, preservatives, and, formerly, as topical antiseptics.
calphostin complex [ UCN 1028,UCN-1028,calphostin ] structure given in first source; isolated from Cladosporium cladosporioides; complex of five closely related components, calphostin A,B,C,D & I; see also records for specifics