Systematic (IUPAC) name
3-n-hexyl- 7,8,9,10-tetrahydro- 6,6,9-trimethyl- 6H-dibenzo(b,d)pyran- 1-ol
Legal status Schedule I / Class A
CAS number 117-51-1 Yes
ATC code None
PubChem CID 8334
ChemSpider 8031 Yes
Mol. mass 328.488 g/mol
Yes (what is this?) (verify)
Parahexyl (Synhexyl, n-hexyl-Δ3THC) is a synthetic homologue of THC, which was invented in 1949 during attempts to elucidate the structure of Δ9-THC, one of the active components of cannabis. 
Parahexyl is similar in both structure and activity to THC, differing only in the position of one double bond, and the lengthening of the 3-pentyl chain by one CH2 group to n-hexyl.  Parahexyl produces classic cannabis agonist effects in animals. It has a somewhat higher oral bioavailability than THC itself but is otherwise very similar.  Presumably it acts as a CB1 agonist in the same way as THC but as there has been no research published using Parahexyl since the discovery of the CB1 receptor this has not been definitively confirmed.
Parahexyl was made illegal under UN convention in 1982 on the basis of its structural similarity and similar effects profile to THC, despite never having had any recorded instances of abuse by humans or illicit sale. Parahexyl was placed into the most restrictive Schedule 1 as a compound with no medical use.
I was looking at the Scheduled Drugs list and noticed that most of them were familiar. An Parahexyl was one of the ones I was unfamiliar with. I was thinking it was a stimulant.
As far as synthetic noids go , I know how bad they r I actually smoked that shit for a couple years ! I actually had to ween my self off them with dabs cuz dabs was the only other thing that would get me stoned besides spice! But now that I don't smoking spice I could get high off weed!