Phenylbiguanide

Systematic (IUPAC) name
1-Phenylbiguanide
Clinical data
Legal status	UN: Unscheduled
Identifiers
CAS Number	102-02-3
PubChem	CID: 4780
ChemSpider	4616
UNII	W8PKA3T2I3
ChEBI	CHEBI:75377
ChEMBL	CHEMBL13791
Chemical data
Formula	C8H11N5
Molecular mass	177.206
SMILES c1ccc(cc1)NC(=N)NC(=N)N
InChI InChI=1S/C8H11N5/c9-7(10)13-8(11)12-6-4-2-1-3-5-6/h1-5H,(H6,9,10,11,12,13) Key:CUQCMXFWIMOWRP-UHFFFAOYSA-N
Physical data
Melting point	135–142 °C (275–288 °F)

Phenylbiguanide (PBG) is a 5-HT3 agonist used to study the role of 5-HT3 receptors in the central nervous system. It has been found to trigger dopamine release in the nucleus accumbens of rats.