Molecular formula: C₁₁H₁₀
Structural formula:

Properties: Light yellow oily liquid
Purity (chromatograph): ≥95% (first grade) ≥90% (second grade)
Use: Raw material to produce efficient brightener, determination of octane and cetane value in diesel, raw material of pesticide emulsifier and plant growth hormone α-NAA, production of surfactants, solvents, etc.