13C-N.m.r. structural study on an enteric pharmaceutical coating cellulose derivative having ether and ester substituents

Determination of substituent distributio

Determination of substituent distribution in cellulose ethers by 13C- and 1H-n.m.r. studies of their acetylated derivatives: O-(2-hydroxypropyl)cellulose

✍ Yasuyuki Tezuka; Kiyokazu Imai; Mitsuyoshi Oshima; Tohru Chiba 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 586 KB

## Structural characteristics of 0-(2-hydroxypropyl)cellulose samples, namely the molar substitution (mol. subst.), the total degree of substitution (d.s.), and the individual degree of substitution of hydroxyl groups on the glucose residues for a wide mol. subst . range of samples were determined