Description

2,3,5,6-Tetrahydro-3,3,4,5,5,8-Hexamethyl-S-Indacene-1,7-Dione is a high-purity, synthetically derived indacene derivative with a unique polycyclic structure. This compound serves as a versatile and critical advanced intermediate in the synthesis of complex organic molecules, particularly in the development of specialty dyes, pigments, and functional materials. It is essential for R&D and production teams in the pharmaceutical, agrochemical, and high-performance materials sectors seeking to develop novel compounds with specific optical or electronic properties.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel active pharmaceutical ingredients (APIs) and complex heterocyclic compounds.
• Agrochemical Synthesis: Used in the research and development of new generation pesticides and herbicides requiring specific structural motifs.
• Functional Dye & Pigment Precursor: Serves as a core structure for developing high-value, color-stable dyes and pigments for inks, coatings, and plastics.
• Organic Electronic Materials: Investigated as a potential intermediate or dopant in the manufacture of organic light-emitting diodes (OLEDs) and semiconductors.
• Chemical Research & Development: A valuable reagent for academic and industrial research in organic synthesis and material science.
• Ligand Synthesis: Can be utilized to create complex ligands for catalysis and metal-organic frameworks (MOFs).

Basic Information

Product Name	2,3,5,6-Tetrahydro-3,3,4,5,5,8-Hexamethyl-S-Indacene-1,7-Dione
CAS No.	55591-16-7
Molecular Formula	C18H22O2
Molecular Weight	270.37 g/mol
Synonyms	1,7-Dioxo-2,3,5,6-tetrahydro-3,3,4,5,5,8-hexamethyl-s-indacene; Hexamethylindacenedione; 3,3,4,5,5,8-Hexamethyl-2,3,5,6-tetrahydro-s-indacene-1,7-dione; S-Indacene-1,7-dione, 2,3,5,6-tetrahydro-3,3,4,5,5,8-hexamethyl-; HMID; Tetrahydrohexamethylindacenedione
EINECS	Contact for details

Quality Control

Our 2,3,5,6-Tetrahydro-3,3,4,5,5,8-Hexamethyl-S-Indacene-1,7-Dione is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and batch-to-batch consistency suitable for sensitive synthetic applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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