Phthalic anhydride (C8H4O3)

Phthalic Anhydride (C8H4O3; CAS 85-44-9) is a practical retrosynthesis target. Phthalic Anhydride presents a C8 framework. Open AI route search in one click below.

Target: Phthalic anhydride
CAS: 85-44-9
Formula: C8H4O3
Approx. MW: 148.12
SMILES: O=C1OC(=O)c2ccccc21
PubChem CID: 6811
Approx. carbons: C8

Phthalic anhydride structure

Properties

Molecular weight: 148.12

View on PubChem

Phthalic anhydride 1H / 13C NMR spectrum →

FAQ

What is the chemical formula of Phthalic anhydride?

Phthalic anhydride has molecular formula C8H4O3. Molecular weight about 148.12 g·mol⁻¹.

What is the CAS number of Phthalic anhydride?

The CAS Registry Number for Phthalic anhydride is 85-44-9.

Run AI retrosynthesis for Phthalic anhydride Target catalog AI tools overview

One click loads Phthalic anhydride into ChemicalTool Reaction for route exploration.

References & tools

ChemicalTool Reaction — AI retrosynthesis with optional library evidence.
PubChem — compound identifiers and structure depictions (NIH/NCBI).
Related: AiZynthFinder / synthesis planning literature for computer-aided retrosynthesis.