This perfume material is prepared by extraction of the crude or cleaned labdanum with a hydrocarbon solvent. The method of extraction, particularly in respect to this product, has been greatly and successfully improved during the past decades. Selective solvent extraction has produced the most beautiful perfumery materials from this important natural. The labdanum gum which is used for extraction is most often the Spanish labdanum. Petroleum ether has been used more frequently during the past years since it yields a beautiful light amber resinoid which contains the most wanted odor principles in high concentration. cinnamon base - isoeugenol and labdanum resinoid. tsca definition 2008: extractives and their physically modified derivatives. cistus ladaniferus, cistaceae.