Welan gum is a microbial polysaccharide produced by a species of Alcaligenes and shows interesting rheological properties of use in the oil and agricultural industries. The structure is similar to gellan based on repeating glucose, rhamnose and glucuronic acid units but with a single side chain of either an α-L-rhamnopyranosyl or an α-L-mannopyranosyl unit linked (1,3) to the 4-O-substituted β-D-glucopyranosyl unit in the backbone.

Synonyms:
Biozan; Kelco Crete

CAS No:
96949-22-3

Molecular Formula:
C7H8N2O3

Molecular Weight:
168.15

Appearance:
White to cream colored powder

Purity:
≥95%

1H-NMR:
Conforms to reference

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.