Title: Dimetridazole
CAS Registry Number: 551-92-8
CAS Name: 1,2-Dimethyl-5-nitro-1H-imidazole
Manufacturers' Codes: RP-8595
Trademarks: Emtryl (Rh>e-Poulenc); Unizole
Molecular Formula: C5H7N3O2
Molecular Weight: 141.13
Percent Composition: C 42.55%, H 5.00%, N 29.77%, O 22.67%
Literature References: Prepn: Bhagwat, Pyman, J. Chem. Soc. 127, 1832 (1925).
Properties: Needles from water, mp 138-139°. Freely sol in alcohol; sparingly sol in cold water, ether.
Melting point: mp 138-139°
Derivative Type: Hydrochloride
Molecular Formula: C5H7N3O2.HCl
Molecular Weight: 177.59
Percent Composition: C 33.82%, H 4.54%, N 23.66%, O 18.02%, Cl 19.96%
Properties: Prisms from dil HCl, mp 195°. Freely sol in water, alcohol; sparingly sol in acetone. Also used as the dihydrogen phosphate, freely sol in water.
Melting point: mp 195°
Therap-Cat-Vet: Antiprotozoal (Histomonas).
Diminazene Aceturate Dimorpholamine Dimoxyline Diniconazole Dinitolmide

Dimetridazole structure.svg
Systematic (IUPAC) name
Clinical data
AHFS/Drugs.com International Drug Names
Legal status  ?
CAS number 551-92-8
ATCvet code QP51AA07
PubChem CID 3090
ChemSpider 2980 YesY
KEGG D07855 YesY
Chemical data
Formula C5H7N3O2 
Mol. mass 141.128 g/mol
 YesY (what is this?)  (verify)

Dimetridazole is a drug that combats protozoan infections. It is a nitroimidazole class drug.[1] It has been banned by the Canadian government as a livestock feed additive.[2]