Hydroxypropyl methylcellulose (HPMC), is a semisynthetic, inert, viscoelastic polymer used as eye drops, as well as an excipient and controlled-delivery component in oral medicaments, found in a variety of commercial products.
H 1692 (OTTO) HPMC, E6 Cas 9004-65-3 - used as a thickener for aqueous and non-aqueous systems, is a water retention aid and steric stabilizer, and clear films with grease resistance.