Product name:o-Phthalaldehyde

Synonyms: 1,2-Benzenedicarboxaldehyde;OPA;2-Phthalaldehyde

CAS number:643-79-8

Molecular formula:C8H6O2

Molecular weight:171.65

Appearance:Light yellow powder

Assay:99%min

Moisture:0.5%max

Melting range:54-57℃

2-caboxybenzaldehyde≤0.9%

Phthalic acid ≤0.2%

phthalide≤0.2%

o-Phthalaldehyde or ortho-phthalaldehyde (OPA) is the chemical compound with the formula C6H4(CHO)2. Often abbreviated OPA, the molecule is a dialdehyde, consisting of two formyl (CHO) groups attached to adjacent carbon centres on a benzene ring. This pale yellow solid is a building block in the synthesis of heterocyclic compounds and a reagent in the analysis of amino acids. OPA dissolves in water solution at pH < 11.5. Its solutions degrade upon UV illumination and exposure to air.