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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

Cumylphenyl diazonaphthoquinone sulfonate | CAS 23121-00-8

A diazonaphthoquinone sulfonate photoactive component documented in photoresist formulations, where molecular identity, degradation profile and formulation cleanliness guide qualification.

CAS23121-00-8
Molecular formulaC25H20N2O4S
Molecular weight444.5 g/mol

Product overview

CAS 23121-00-8 identifies a diazonaphthoquinone sulfonate ester bearing a cumylphenyl group. The complete structure matters: a general DNQ designation can also refer to other sulfonate esters with different substitution patterns or molecular functionality. Procurement should identify this single chemical component separately from a resin solution or ready-to-use photoresist, then define purity and cleanliness criteria for the intended formulation.

Chemical identity

Chemical name
Cumylphenyl diazonaphthoquinone sulfonate
CAS number
23121-00-8
Molecular formula
C25H20N2O4S
Molecular weight
444.5 g/mol

Application context

This diazonaphthoquinone sulfonate ester is used as a photoactive component in photoresist formulations. Its selection concerns the photosensitive component of a complete resist rather than an independently specified patterning process. Resin composition, solvent, film preparation and exposure/development conditions remain formulation-level variables. Qualification can therefore combine chemical identity and chromatographic purity with the optical and contamination controls required by the intended process.

Chemistry and synthetic role

The structure couples a diazoquinone chromophore to an aromatic sulfonate ester. It should be distinguished from unspecified mixtures of DNQ esters.

Quality review

Exact DNQ ester

Verify the cumylphenyl ester and positional identity against structural analytical data.

Photoactive integrity

Review related components and degradation using a suitable chromatographic method; state conditions for any optical measurement.

Formulation cleanliness

For demanding lithography work, agree ionic, metallic and insoluble-particle criteria at the required analytical sensitivity.

Preparing a specification

Specify CAS and full ester identity, chromatographic assay, degradation profile and application-dependent optical, ionic, metal or particle criteria.

Packaging and storage

Confirm container compatibility, closure and net weight for the selected grade and destination. Follow the actual supplier SDS and batch label for storage and transport.

Documentation

Request the batch COA, SDS and analytical methods covering the agreed purchasing specification. Confirm which supporting chromatograms and application-specific records are available from the selected manufacturer.

Procurement questions

Is this a complete photoresist?

No. It is an individual photoactive component; a resist also contains other formulation ingredients.

Are all DNQ sulfonates interchangeable?

Their ester structures and functionality differ, requiring formulation-specific evaluation.

Does chemical purity define lithographic resolution?

Resolution depends on the complete resist and patterning process as well as material quality.

Technical sources
  1. PubChem CAS identity lookupNCBI / PubChem
  2. Chemical substance CAS 23121-00-8NITE / J-CHECK
  3. AZ 10XT 220 cP Photoresist safety data sheetMerck; hosted by WMI