Iota-Carrageenan (I-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.