Description

Scytonemin CAS NO 152075-98-4 is a unique, lipid-soluble, yellow-brown dimeric pigment belonging to the class of indole-alkaloids, originally isolated from cyanobacteria. This compound matters for its exceptional role as a highly effective, natural ultraviolet (UV)-A sunscreen, offering photoprotective properties by directly absorbing harmful radiation. Industries involved in advanced cosmeceuticals, nutraceuticals, and biomaterials seek it for developing next-generation UV-protective formulations and exploring its antioxidant potential.

Application

• Cosmetic & Skincare Formulations: As a primary active ingredient in sunscreens, anti-aging serums, and daily moisturizers for broad-spectrum UVA protection.
• Nutraceutical & Dietary Supplements: Incorporated for its potential systemic photoprotective and antioxidant benefits when taken orally.
• Biomedical Research: Used as a reference standard and investigative tool in studies focused on oxidative stress, photobiology, and natural product chemistry.
• Functional Materials: Exploration in the development of UV-blocking coatings, films, and smart textiles.
• Algal & Microbial Physiology Studies: Employed to study cyanobacterial survival mechanisms under extreme environmental stress.

Basic Information

Product Name	Scytonemin
CAS No.	152075-98-4
Molecular Formula	C36H20N2O4
Molecular Weight	544.55 g/mol
Synonyms	Scytonemin; 3,6-Bis(4-hydroxy-3-methoxyphenyl)-2,5-dihydropyrrolo[3,4-f]isoindole-1,3,5,7(2H,6H)-tetrone; Cyanobacterial UV-A sunscreen pigment; 2H-Pyrrolo[3,4-f]isoindole-1,3,5,7(6H)-tetrone, 3,6-bis(4-hydroxy-3-methoxyphenyl)-2,5-dihydro-; Natural UV-absorbing pigment
EINECS	Contact for details

Quality Control

Our Scytonemin is produced and handled under strict quality protocols to ensure batch-to-batch consistency and high purity, suitable for research and formulation development. Each lot is analyzed using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and related substances is provided with every shipment to support your quality assurance requirements.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at controlled room temperature (15-25°C) to minimize oxidation. Keep the container in a cool, dry, and well-ventilated place away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow-brown to brown powder
Identification (HPLC)	Conforms to reference standard
Identification (UV/VIS)	Conforms to reference standard
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
UV Absorption Profile	Characteristic peaks between 250-400 nm

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