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Substance Name: Lapyrium chloride [USAN]
RN: 6272-74-8
UNII: 732T8851QH

Classification Code

  • Pharmaceutic Aid (Surfactant)

Molecular Formulas

  • C21-H35-Cl-N2-O3
  • C21-H35-N2-O3.Cl

Molecular Weight

  • 398.971
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Names and Synonyms

Name of Substance

  • 1-(2-Hydroxyethyl)carbamoyl methyl pyridinium chloride laurate
  • 1-(2-Oxo-2-((2-((1-oxododecyl)oxy)ethyl)amino)ethyl)pyridinium chloride
  • Lapirium chloride [INN]
  • Lapyrium
  • Lapyrium chloride
  • Lapyrium chloride [USAN]
  • N-(Lauryl colamino formyl methyl) pyridinium chloride
  • Pyridinium, 1-(2-oxo-2-((2-((1-oxododecyl)oxy)ethyl)amino)ethyl)-, chloride


  • 1-(((2-Hydroxyethyl)carbamoyl)methyl)pyridinium chloride laurate (ester)
  • Caswell No. 519
  • Chlorure de lapirium
  • Chlorure de lapirium [INN-French]
  • Cloruro de lapirio
  • Cloruro de lapirio [INN-Spanish]
  • EINECS 228-464-1
  • Emcol E-607
  • EPA Pesticide Chemical Code 069131
  • Lapirii chloridum
  • Lapirii chloridum [INN-Latin]
  • Lapirium chloride
  • Lapyrium chloride
  • N'-Lauroylcolaminoformylmethyl pyridinium chloride
  • N-((N-(2-Dodecanoyloxyethyl)carbamoyl)methyl)pyridinium chloride
  • N-(Acylcolaminoformylmethyl)pyridinum chloride
  • N-(Colaminoformylmethyl)pyridinium chloride laurate
  • N-(Lauroyl colamino formylmethyl)pyridinium chloride
  • N-(Lauroylcolaminoformylmethyl)pyridinium chloride
  • NSC-33659
  • Pyridinium, 1-(2-oxo-2-((2-((1-oxododecyl)oxy)ethyl)-amino)ethyl)-, chloride
  • Pyridinium, 1-(2-oxo-2-((2-((1-oxododecyl)oxy)ethyl)amino)ethyl)-, chloride
  • UNII-732T8851QH

Systematic Names

  • Lapirium chloride
  • Pyridinium, 1-(((2-hydroxyethyl)carbamoyl)methyl)-, chloride, laurate (ester) (8CI)
  • Pyridinium, 1-(2-hydroxyethylcarbamoylmethyl)-, chloride, dodecanoate
  • Pyridinium, 1-(2-oxo-2-((2-((1-oxododecyl)oxy)ethyl)amino)ethyl)-, chloride
  • Pyridinium, 1-(2-oxo-2-((2-((1-oxododecyl)oxy)ethyl)amino)ethyl)-, chloride (1:1)

Superlist Name

  • N-Lauroyl ester of colaminoformylmethylpyridinium chloride

Registry Numbers

CAS Registry Number

  • 6272-74-8


  • 732T8851QH

Other Registry Number

  • 1341-07-7

System Generated Number

  • 0006272748

Molecular Formulas

Molecular Formulas

  • C21-H35-Cl-N2-O3
  • C21-H35-N2-O3.Cl

Molecular Formula Fragments

  • C21-H35-N2-O3
  • Cl

Structure Descriptors








Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intravenous 18mg/kg (18mg/kg)   U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#00177,

Physical Properties

Physical Property Value Units Temp (deg C) Source
log P (octanol-water) 0.720 (none)   EST
Atmospheric OH Rate Constant 3.61E-11 cm3/molecule-sec 25 EST

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