Iota-Carrageenan

IotaCarrageenin is a polysaccharide obtained from red algae. ι-Carrageenin has been used as a bioadhesive polymer to enhance the permeation effect of AT1002 on the nasal absortion of insulin. Iota-Carageenan is a gelling sulfated galactan extracted from red seaweed (typically Euchuma cottonii and Euchuma spinosum). The structure of all carrageenans consists of a strictly alternating masked repeating unit of (1,3) linked α-D-galactose and (1,4) linked β-D-galactose. The α-linked galactose occurs as a 3,6-anhydro-2-sulphate unit and the β-linked sugar occurs as the 4-sulfate.||Synonyms:|I-Carrageenan; Vegetable gelatin||CAS No:|9062-07-1||Molecular Formula:|[C14H22O15S22-]x||Molecular Weight:|-494.45||Appearance:|White to gray to brown powder to crystal||Purity:|As reported||Loss on Drying:|≤12%||Viscosity:|5-20m Pa-s (0.3%, H2O, 25°C)||Ash:|≤40%||Storage and Stability:|May be stored at RT for short-term only. Long-term storage is recommended at 4°C. For maximum recovery of product, centrifuge the original vial prior to removing the cap.