Skip to product details

Chemical product profile

HONGKUN / PRODUCT DIRECTORY

2-Indanone | CAS 615-13-4

A benzene-fused cyclic ketone whose central ring carbonyl supports indenopyrrole construction, with published use as a starting material for indene-fused porphyrin research.

CAS615-13-4
Molecular formulaC9H8O
Molecular weight132.16 g/mol

Product overview

The carbonyl position is decisive in 2-indanone. Within its five-membered ring, the ketone is flanked by two methylene groups attached to the fused benzene framework. This differs from 1-indanone, in which the carbonyl is directly adjacent to the aromatic fusion. The two isomers share formula C9H8O but provide different synthetic arrangements. Published porphyrin research uses 2-indanone to construct indenopyrrole intermediates. Buyers should therefore use CAS 615-13-4 and confirm the 2-ketone structure rather than accepting the abbreviated name indanone. Water and the basis of the reported assay also deserve attention, particularly when comparing a chromatographic purity figure with the effective amount of ketone charged to a condensation.

Chemical identity

Chemical name
2-Indanone
CAS number
615-13-4
Molecular formula
C9H8O
Molecular weight
132.16 g/mol

Application context

Published work on indene-fused porphyrins starts from 2-indanone and constructs indenopyrrole units by a Knorr-type approach. Those fused units are elaborated into larger pyrrolic intermediates and then incorporated into porphyrin frameworks. The resulting macrocycles were investigated for their spectroscopic and electronic characteristics. In this chain, 2-indanone supplies the fused carbon skeleton and ketone reactivity; it is not itself the final chromophore. For analogous research, consistent carbonyl-position identity and a defined impurity profile help establish an appropriate starting-material specification. Requirements for the final porphyrin or metal complex should be set at that downstream stage.

Chemistry and synthetic role

O=C1Cc2ccccc2C1 places the ketone between two methylene groups in the saturated part of the fused ring. This connectivity explains why the 1- and 2-indanone isomers serve different routes.

Quality review

Confirm the 2-ketone isomer

Require identity evidence that distinguishes 1-indanone despite the shared formula.

Reconcile water and ketone content

State whether the assay is chromatographic area purity or an as-received content result, and agree water criteria.

Review fused-ring related substances

Define relevant indanone, indanol or other process impurities according to the proposed source and route.

Preparing a specification

Specify 2-indanone, CAS 615-13-4, structural identification, ketone assay basis, positional-isomer control and water. Include process-related fused-ring impurities where relevant.

Packaging and storage

Packaging, closure and net weight are agreed for the selected grade, order quantity and destination. Confirm storage and transport requirements against the actual supplier SDS.

Documentation

Request a batch COA, specification, identity data and SDS. Confirm the availability of the analytical methods and any application-specific impurity results with the proposed supplier.

Procurement questions

Can a quote simply state indanone?

Specify 2-indanone and its CAS to avoid confusion with 1-indanone.

Is this a porphyrin dye?

No. It is a starting ketone used in published routes to indene-fused porphyrins.

Why check water separately from GC purity?

A chromatographic area result may not describe the water fraction of the supplied material.

Technical sources
  1. 2-Indanone 146692Sigma-Aldrich
  2. Beta-indanone Organic SynthesesOrganic Syntheses
  3. Synthesis of indenoporphyrinsJournal of Organic Chemistry / PubMed