Puas yog hypromellose thiab hydroxypropyl cellulose yog tib yam?

Tsis yog, hypromellose thiab hydroxypropyl cellulose tsis zoo ib yam.

Hypromellose, tseem hu ua hydroxypropyl methylcellulose (HPMC), yog ib tug semi-synthetic, inert, viscoelastic polymer siv los ua ib tug ophthalmic lubricant, lub qhov ncauj excipient, ntsiav tshuaj binder, thiab ib tug zaj duab xis qub. Nws yog ib tug derivative ntawm cellulose thiab yog tsim los ntawm rov qab units ntawm qab zib qab zib. Hypromellose yog siv rau ntau yam tshuaj, tshuaj pleev ib ce, thiab khoom noj khoom haus, thiab feem ntau suav hais tias muaj kev nyab xeeb (GRAS) los ntawm US Food and Drug Administration (FDA).

Hydroxypropyl cellulose (HPC) yog ib tug semi-synthetic polymer muab los ntawm cellulose. Nws yog tsim los ntawm kev rov ua dua ntawm cov piam thaj qab zib thiab siv los ua tus neeg sawv cev thickening, stabilizer, thiab tshem tawm tus neeg sawv cev hauv ntau yam khoom. HPC feem ntau suav hais tias muaj kev nyab xeeb (GRAS) los ntawm US Food and Drug Administration (FDA).

Txawm hais tias ob qho tib si hypromellose thiab hydroxypropyl cellulose yog muab los ntawm cellulose, lawv tsis zoo ib yam. Hypromellose yog ib tug derivative ntawm cellulose uas muaj hydroxypropyl pawg, thaum hydroxypropyl cellulose yog ib tug polymer ntawm cellulose uas muaj hydroxypropyl pawg. Hypromellose yog siv los ua ophthalmic lubricant, lub qhov ncauj excipient, ib ntsiav tshuaj binder, thiab ib zaj duab xis qub, thaum hydroxypropyl cellulose yog siv los ua ib tug thickening neeg sawv cev, stabilizer, thiab suspending agent.