PTZ

Chemicals used in industry and science, namely, phenothiazine in flake, powder or prill form for use as an inhibitor, antioxidant and shortstopping agent in the stabilization [if] *of* acids, esters, monomers, and polymers; phenothiazine for use as an antioxidant in synthetic lubricants, oils and polyols; phenothiazine for use as a pharmaceutical intermediate