Pironetin binds to α-tubulin and is an effective inhibitor of microtubule polymerization. It also has cell cycle arrest and antitumor activity. Pironetin is an α β unsaturated lactone isolated from Streptomyces species.
Asphalt is a dark liquid. It is also a mixture of heavy hydrocarbon residues including saturated and unsaturated hydrocarbons and aromatic hydrocarbons.
Isophthalic acid is an intermediate for a modifier of polyethylene terephthalate for bottles, gel coats, high solids paints, resins for coatings, and high-performance unsaturated polyesters.