Viminol

Viminol
Clinical data
Trade names	Dividol
Other names	Dividol, viminolo, diviminol
AHFS/Drugs.com	International Drug Names
Routes of; administration	Oral
ATC code	N02BG05 (WHO) ;
Legal status
Legal status	BR: Class A1 (Narcotic drugs);
Identifiers
	IUPAC name 1-[1-[(2-Chlorophenyl)methyl]pyrrol-2-yl]-2-[di(butan-2-yl)amino]ethanol;
CAS Number	21363-18-8 ;
PubChem CID	65697;
ChemSpider	59125 ;
UNII	TPV54G6XBG;
KEGG	D07295 ;
ChEMBL	ChEMBL2104940 ;
CompTox Dashboard (EPA)	DTXSID00864987 ;
ECHA InfoCard	100.040.301
Chemical and physical data
Formula	C21H31ClN2O
Molar mass	362.94 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CCC(C)N(C(C)CC)CC(O)C1=CC=CN1CC2=CC=CC=C2Cl;
	InChI InChI=1S/C21H31ClN2O/c1-5-16(3)24(17(4)6-2)15-21(25)20-12-9-13-23(20)14-18-10-7-8-11-19(18)22/h7-13,16-17,21,25H,5-6,14-15H2,1-4H3 ; Key:ZILPIBYANAFGMS-UHFFFAOYSA-N ;
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Viminol (marketed under the brandname Dividol) is an opioid analgesic developed by a team at the drug company Zambon in the 1960s. Viminol is based on the α-pyrryl-2-aminoethanol structure, unlike any other class of opioids.

Viminol has both antitussive (cough suppressing) and analgesic (pain reducing) effects. Viminol has additional effects similar to other opioids including sedation and euphoria. It has six different stereoisomers which have varying properties. Four are inactive, but the 1S-(R,R)-disecbutyl isomer is a μ-opioid full agonist around 5.5 times more potent than morphine and the 1S-(S,S)-disecbutyl isomer is an antagonist. Since viminol is supplied as a racemic mixture of isomers, the overall effect is a mixed agonist–antagonist profile similar to that of opioids such as pentazocine, although with somewhat fewer side effects.