Description

Pustulan CAS NO 37331-28-5 is a high-purity, water-soluble polysaccharide derived from lichen, specifically characterized as a linear β-(1→6)-glucan. This unique molecular structure provides exceptional gelling, thickening, and film-forming properties, making it a valuable functional biopolymer. It is primarily utilized in the pharmaceutical, cosmetic, and life science research industries for applications requiring high biocompatibility and specific rheological control.

Application

• Pharmaceutical Excipient: Used as a binder, disintegrant, and controlled-release matrix in tablet and capsule formulations.
• Microbiological Culture Media: Serves as a gelling agent and carbon source in specialized culture media for fungi and bacteria.
• Cosmetic Formulations: Employed as a natural thickener, stabilizer, and film-forming agent in creams, lotions, and serums.
• Biomedical Research: Utilized as an immunomodulator and for studying β-glucan receptor interactions in immunological assays.
• Food Science Research: Acts as a dietary fiber source and texturizing agent in experimental food product development.
• Chromatography Substrate: Can be modified for use as a matrix in gel filtration and affinity chromatography columns.

Basic Information

Product Name	Pustulan
CAS No.	37331-28-5
Molecular Formula	(C6H10O5)n
Molecular Weight	Variable (Polymer)
Synonyms	β-(1→6)-Glucan; (1→6)-β-D-Glucan; Linear β-1,6-Glucan; Lichenan (from *Lasallia pustulata*); Pustulan Polysaccharide; NSC 106982; Ustilagin
EINECS	Contact for details

Quality Control

Our Pustulan is produced and tested under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as carbohydrate content, viscosity, and microbiological limits. We can supply grades suitable for research, cosmetic, and pharmaceutical applications, with specifications aligned with industry best practices.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is kept sealed in a low-humidity environment to prevent caking and maintain stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (Carbohydrate)	≥ 95.0%
pH (1% solution)	5.0 - 7.0
Loss on Drying	≤ 8.0%
Residue on Ignition	≤ 2.0%
Viscosity (1% solution)	Reported on COA
Microbiological Limits	Meets standard criteria

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.