Triacontanol  is a long-chain primary alcohol composed of thirty carbon atoms (a straight-chain saturated fatty alcohol). It is a natural long-chain plant growth regulator , widely found in the epicuticular waxes of plants  (plant waxes such as rice bran wax) and the exoskeleton waxes of insects  (insect waxes such as beeswax). Because it was first purified from beeswax, it is also called beeswax alcohol . At room temperature, triacontanol is a solid that is colorless or sli