Description

5,6-Dihydroxyindole is a key organic intermediate and a fundamental monomer in the biosynthesis of melanin pigments. This compound matters for its role as a critical precursor in the production of synthetic eumelanin, enabling advanced material science and cosmetic applications. Industries requiring high-purity biochemical intermediates, such as cosmetic R&D for hair dyes, advanced polymer synthesis, and specialty chemical manufacturing, rely on its consistent quality.

Application

• Hair Dye & Cosmetic Pigments: Primary monomer for the synthesis of eumelanin, used in permanent oxidative hair colorants and sunless tanning formulations.
• Biomedical Research: Used in studies of melanogenesis, neuromelanin formation, and as a model compound in Parkinson's disease research.
• Advanced Material Science: Key building block for creating bio-inspired, conductive polymers, and melanin-based thin films for organic electronics.
• Antioxidant Studies: Employed as a reference standard in research on natural antioxidants and radical scavenging activity due to its catechol structure.
• Photoprotective Agents: Investigated for use in formulations designed to provide UV protection by mimicking natural skin pigmentation.
• Chemical Synthesis: Serves as a versatile intermediate for the preparation of more complex indole derivatives and pharmaceutical candidates.

Basic Information

Product Name	5,6-Dihydroxyindole
CAS No.	3131-52-0
Molecular Formula	C8H7NO2
Molecular Weight	149.15 g/mol
Synonyms	5,6-Dihydroxy-1H-indole; 5,6-DHI; Indole-5,6-diol; 1H-Indole-5,6-diol; 3131-52-0; 5,6-Dihydroxyindole (DHI); Melanin precursor
EINECS	221-522-9

Quality Control

Our 5,6-Dihydroxyindole is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C to minimize oxidation and degradation. The container should be kept in a cool, dry, and well-ventilated area, away from incompatible materials.

Specification

Item	Specification
Appearance	Off-white to tan powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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