Applications of 4-Hydroxyindan-1-One in Industrial Manufacturing

We supply 4-Hydroxyindan-1-One as a key intermediate for a range of technically demanding downstream sectors. Our production and documentation standards ensure traceability and regulatory compliance from raw material synthesis to customer application. Below, we outline verified industrial scenarios where our material directly integrates into the global manufacturing value chain.

1. Pharmaceutical Intermediates for CNS-Active Compounds

4-Hydroxyindan-1-One serves as a core building block in the synthesis of several patented and generic central nervous system (CNS) active molecules, such as selective monoamine oxidase inhibitors and dopamine agonists. In advanced-manufacturing drug development, chemists rely on its indanone structure for introducing hydroxy functionalities necessary for subsequent functionalization steps. Process development teams must control impurity profiles to comply with strict pharmacopoeia standards and regulatory filings.

Industry compliance standards

• ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
• EU GMP for APIs
• USP, Ph. Eur., JP monograph requirements for related substances and impurity control
• US FDA 21 CFR Part 211 (process documentation, traceability)

Typical usage ratio

• Applied at 0.2–5.0 molar equivalents relative to the main API core scaffold, with adjustment based on route selection and target yield.

Downstream process integration

• Incorporated in Stage II or III synthesis steps, often following a Friedel–Crafts acylation or condensation reaction; isolation and QC at the intermediate checkpoint before final API coupling or functionalization.

Final product types

• Generic MAO-B inhibitors
• Dopamine receptor agonists
• Proprietary small-molecule CNS drugs

2. Fragrance and Aromachemical Manufacturing

Our material is widely used in the controlled synthesis of specialized aroma chemicals and fragrances. Perfumiers and flavor compound manufacturers utilize it to develop complex cyclic ketones, aldehydes, and alcohols essential for signature scent creation. Its hydroxyindane structure delivers a unique note in musk and green fragrances, and also acts as a precursor for higher-value flavor molecules used in non-food applications.

Industry compliance standards

• IFRA Code of Practice
• ISO 9235: Natural Aromatic Raw Materials
• Harmonized EU CLP (Classification, Labelling and Packaging) Regulation
• REACH registration and dossier maintenance for restricted substances

Typical usage ratio

• Usually 0.5–2.5% w/w in starting formulations, fine-tuned depending on the intensity and composition of the fragrance target profile.

Downstream process integration

• Added as a starting raw material for ring modification, methylation, or aldol condensation in batch or continuous synthesis of aroma compounds; subsequent distillation and solvent removal precede blending for market-ready concentrate delivery.

Final product types

• Cyclic musk alternatives
• Nature-identical green note aromas
• Specialty aromatics for perfumery bases

3. Agrochemical Synthesis (Selective Herbicide Intermediates)

In agrochemical active ingredient (AI) production, our indanone derivative provides a stable, high-purity substrate for synthesizing selective herbicide intermediates. Its controlled reactivity underpins structure-activity relationship optimization for next-generation herbicidal agents, supporting synthetic pathways that minimize by-product formation and maximize batch yield.

Industry compliance standards

• FAO/WHO Specifications for Plant Protection Products
• OECD GLP (Good Laboratory Practice) for product registration studies
• EU Regulation (EC) No 1107/2009 for pesticide approval
• ISO 9001:2015 for quality management in agrochemical synthesis

Typical usage ratio

• Commonly 3–8% w/w in pre-final synthetic stages, adjusted via stoichiometric calculation based on desired chain length and ring-substitution patterns in the target compound.

Downstream process integration

• Integrated into step-growth or ring-extension reactions as a nucleating agent before halogenation or sulfonylation; purification via crystallization to meet regulatory impurity thresholds before formulation.

Final product types

• Selective pre-emergence herbicides
• Growth regulator actives
• Systemic plant-protective intermediates

4. Performance Polymer Chain Modifier

4-Hydroxyindan-1-One functions as a chain-stopping modifier in the precision synthesis of specialty polyesters and copolymers. Resin manufacturers incorporate it to secure material attributes such as glass transition temperature, flexibility, and molecular weight distribution. Its introduction enables production teams to target distinct end-use segment specifications, especially in automotive, electrical insulation, and solvent resistance fields.

Industry compliance standards

• ISO 9001:2015 for polymer manufacturing QC
• DIN EN ISO 14001 for environmental management in plastics production
• ASTM D638 for tensile properties of plastics
• UL 94 flammability standards for electrical applications

Typical usage ratio

• Introduced at 0.1–0.7 mole% relative to total diol content, subject to application-specific performance testing.

Downstream process integration

• Charged to the polycondensation reactor during the oligomerization stage; influences molecular architecture before terminal monomer addition and subsequent step-growth to full polymer.

Final product types

• High-performance engineering plastics
• Flexible polyester resins
• Specialty copolymer blends for industrial components

5. Specialty Dye Intermediate

The indanone skeleton is integral to the development of advanced dye molecules in both textile and electronic industries. Our product meets the purity criteria required for consistent chromophore synthesis, serving dye formulators looking for distinctive tinting strength and fastness properties. It supports azo and anthraquinone dye synthesis routes demanding exacting process control for shade reproducibility.

Industry compliance standards

• Oeko-Tex Standard 100 (Textile Chemical Safety)
• REACH Annex XVII for restricted aromatic amines
• ZDHC MRSL v3.1 (Manufacturing Restricted Substances List)
• ISO 105 series for color fastness testing

Typical usage ratio

• Added at 0.3–6% w/w, dependent on intended chromophore extension and final dye backbone structure.

Downstream process integration

• Undergoes condensation or coupling with diazonium salts during primary dye molecule assembly; participates in multi-stage purification before dry-down and finishing for marketability.

Final product types

• High-fastness textile dyes
• NIR-absorbing functional colorants for electronics
• Special-purpose pigments for industrial coatings