Protocatechuic aldehyde is a phenolic aldehyde, a compound released from cork stoppers into wine.
This molecule can be used as a precursor in the vanillin synthesis by biotransformation by cell cultures of Capsicum frutescens, a type of Chili pepper. It is also found in the mushroom Phellinus linteus.
Molecular formula: C7H6O3
Molecular weight: 138.12100
Accurate quality: 138.03200
Appearance and Properties: Brown Powder
Melting point: 150-157 ºC (lit.)
Boiling point: 295.4 ºC at 760 mmHg
Flash point: 146.7 ºC
Refractive index: 1.674
Water solubility: 50 g/L (20 ºC)
Stability: Stable. Incompatible with strong bases, strong oxidizing agents.
Storage conditions: 2-8 ºC
Steam pressure: 0.000867 mmHg at 25 ºC
Customs Code: 29124900
Hazard Category Code: R36/37/38
Safety instructions: S26-S36-S37/39
Dangerous goods sign: Xi
Protocatechuic aldehyde has the effects of anti-inflammation and increasing coronary blood flow. It is an effective component of Sijiqing Leaf against angina pectoris and one of the main effective components of Laotaicao in the treatment of nephritis. It is also used in perfume synthesis.