Sotolon (also known as sotolone) is a lactone and an extremely powerful aroma compound, with the typical smell of fenugreek or curry at high concentrations and maple syrup, caramel, or burnt sugar at lower concentrations. Sotolon is the major aroma and flavor component of fenugreek seed and lovage, and is one of several aromatic and flavor components of artificial maple syrup. It is also present in molasses, aged rum, aged sake and white wine, flor sherry, roast tobacco, and dried fruiting bodies of the mushroom Lactarius helvus. Sotolon can pass through the body relatively unchanged, and consumption of foods high in sotolon, such as fenugreek, can impart a maple syrup aroma to one's sweat and urine. In some individuals with the genetic disorder maple syrup urine disease, it is spontaneously produced in their bodies and excreted in their urine, leading to the disease's characteristic smell.

CAS：28664-35-9
中文别名：4,5-二甲基-3-羟基-2,5-二氢呋喃-2-酮;4,5-二甲基-3-羟基-2(5H)-呋喃酮;葫芦巴内;3-羟基-4,5-二甲基-2(5H)呋喃酮;
英文别名：3-hydroxy-4,5-dimethyl-2(5H)-furanone;Sugar lactone;4,5-dimethyl-isotetronic acid;4,5-DiMethyl-3-hydroxy-2(5H)-furanone;2(5h)-FURANONE,3-HYDROXY-4,5-DIMETHYL;Fenugreek Lactone;4,5-Dimethyl-3-hydroxy-2(5H)-furanone;sotolon;Caramel furanone;4,5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one;Sotolone;
分子式：C6H8O3
分子量：128.126
精确质量：128.047
Psa：46.53
Logp：0.7637

EINECS号：249-136-4

外观与性状：澄明黄色液体。沸点81℃(80Pa)，熔点26～29℃。呈甜、焦糖、槭树、红糖香。 天然品存在于烘烤过的弗吉尼亚烟草、米制酒、胡芦巴等中。
密度：1.049g/mLat 25°C
沸点：184°C(lit.)
熔点：26-29°C(lit.)
闪点：>230°F
折射率：n20/D 1.491(lit.)
储存条件：Refrigerator (+4°C)

安全说明：S36
WGK Germany：3
危险类别码：R20/22
海关编码：2932209090
危险品标志：Xn

用途
1、 GB 2760--1996规定为暂时允许使用的食品用香料。主要用于焦糖、红糖、威士忌酒、棉花糖、咖啡、太妃糖等型香精。