Co-author on Mechoulam R, Ben-Shabat S, Hanus L, et al., Biochem Pharmacol 50:83 (1995), identifying 2-AG in canine gut. Shimon Ben-Shabat is normally named as the doctoral student who led this one; Sugiura's group reported 2-AG independently the same year. Hanuš is a contributor here, not the discoverer.
Isolated from canine gut in his laboratory; the bench work is credited to his PhD student Shimon Ben-Shabat, and Mechoulam is first author on Biochem. Pharmacol. 50:83-90. Sugiura's group in Japan reported 2-AG independently in the same year, so this is a co-discovery rather than a sole one.