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Substance Name: Carbonyl cyanide m-chlorophenyl hydrazone
RN: 555-60-2


  • A proton ionophore. It is commonly used as an uncoupling agent and inhibitor of photosynthesis because of its effects on mitochondrial and chloroplast membranes.

Molecular Formula

  • C9-H5-Cl-N4

Molecular Weight

  • 204.62

Classification Codes

  • Drug / Therapeutic Agent
  • Enzyme Inhibitors
  • Ionophores
  • Membrane Transport Modulators
  • Proton Ionophores
  • Uncoupling Agents
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Names and Synonyms

Name of Substance

  • Carbonyl cyanide m-chlorophenyl hydrazone

MeSH Heading

  • Carbonyl cyanide m-chlorophenyl hydrazone


  • ((3-Chlorophenyl)hydrazono)propanedinitrile
  • (3-Chlorophenyl)hydrazonomalononitrile
  • BRN 1842102
  • Carbonyl cyanide m-chlorophenylhydrazone
  • Carbonyl cyanide, (3-chlorophenyl)hydrazone
  • Carbonyl cyanide-m-chlorophenylhydrazone
  • Carbonylcyanide-3-chlorophenylhydrazone
  • Carbonylcyanide-m-chlorophenylhydrazone
  • CCCP
  • CCP
  • EINECS 209-103-7
  • m-Chlorophenyl carbonylcyanide hydrazone
  • NSC 88124

Systematic Names

  • ((3-Chlorophenyl)hydrazono)malononitrile
  • Carbonyl cyanide, 3-chlorophenylhydrazone
  • Mesoxalonitrile, (m-chlorophenyl)hydrazone (8CI)
  • Propanedinitrile, ((3-chlorophenyl)hydrazono)-
  • Propanedinitrile, 2-(2-(3-chlorophenyl)hydrazinylidene)-

Registry Numbers

CAS Registry Number

  • 555-60-2

Other Registry Numbers

  • 208707-97-5
  • 81693-28-9

System Generated Number

  • 0000555602

Structure Descriptors








Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 8mg/kg (8mg/kg)   Biochemical Pharmacology. Vol. 18, Pg. 1389, 1969.
rat LDLo subcutaneous 50mg/kg (50mg/kg)   European Journal of Medicinal Chemistry--Chimie Therapeutique. Vol. 12, Pg. 361, 1977.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 176 dec deg C   EXP
log P (octanol-water) 3.38 (none)   EXP
Water Solubility 53.8 mg/L 25 EST
Vapor Pressure 5.67E-06 mm Hg 25 EST
Henry's Law Constant 4.29E-09 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 3.00E-11 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.