A monoacylglycerol; decreased in tumor tissue in a mouse model of azoxymethane-induced colorectal carcinogenesis; decreased in lung tissue from patients with adenocarcinoma; increased in the serum of patients with Buruli ulcer and in the cerebrospinal fluid of patients with MS, NMOSD, and ITM; has been used in the composition of transfersomes for transdermal delivery of doxorubicin in rats, leading to doxorubicin accumulation in lymph nodes, spleen, and heart