The Abietic acid reference article from the English Wikipedia on 24-Apr-2004
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Abietic acid

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Abietic acid C20H30O2

Also known as: abietinic acid, sylvic acid, 13-isopropylpodocarpa-7,13-dien-15-oic acid
Molecular formula: C20H30O2
CAS No: 514-10-3
EINECS No: 208-173-3

Appearance: yellow resinous powder, crystals or chunks
Melting point: 173°C
Boiling point: 250°C at 9 mm Hg