Grapefruit mercaptan is the common name for a natural organic compound found in grapefruit. It is a monoterpenoid that contains a thiol (also known as a mercaptan) functional group. Structurally a hydroxy group of terpineol is replaced by the thiol in grapefruit mercaptan, so it also called thioterpineol. Volatile thiols typically have very strong, often unpleasant odors that can be detected by humans in very low concentrations. Grapefruit mercaptan has a very potent, but not unpleasant, odor, and it is the chemical constituent primarily responsible for the aroma of grapefruit. This characteristic aroma is a property of only the R enantiomer.

CAS：71159-90-5
中文别名：1-P-薄荷烯-8-硫醇;alpha,alpha,4-三甲基-3-环己烯-1-甲硫醇;对-孟-1-烯-8-硫醇;α,α-4-三甲基-3-环己烯-1-甲硫醇;
英文别名：GRAPEFRUIT MERCAPTAN;grapefruit mercaptane;1-PARA-MENTHENE-8-THIOL;p-Menth-1-ene-8-thiol;P-1-MENTHEN-8-THIOL;p-Mentha-1-ene-8-thiol;p-1-menthene-8-thiol;8-Mercapto-1-p-menthene;1-p-menthene-8-thiol;FEMA 3700;
分子式：C10H18S
分子量：170.315
精确质量：170.113
Psa：38.8
Logp：3.4412

UNII：7AT54D0N8R

外观与性状：无色液体带有芳香和柚子味道
密度：0.938 g/cm3
沸点：229.4ºC at 760 mmHg
折射率：1.5