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Substance Name: 5,5-Dimethylhydantoin
RN: 77-71-4
UNII: 34032MQ9RO
InChIKey: YIROYDNZEPTFOL-UHFFFAOYSA-N

Classification Code

  • Drug / Therapeutic Agent

Molecular Formula

  • C5-H8-N2-O2

Molecular Weight

  • 128.1302
 
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Names and Synonyms

Name of Substance

  • 2,4-Imidazolidinedione, 5,5-dimethyl-
  • 5,5-Dimethyl hydantoin
  • 5,5-Dimethyl-2,4-imidazolidinedione
  • 5,5-Dimethylhydantoin
  • DM Hydantoin

Synonyms

  • 5,5-Dimethyl-2,4-imidazolidinedione
  • 5,5-Dimethylhydantoin
  • 5-24-05-00348 (Beilstein Handbook Reference)
  • AI3-61127
  • BRN 0002827
  • Dantoin 736
  • Dantoin DMH
  • Dimethylhydantoin
  • DM Hydantoin
  • DMH
  • EC 201-051-3
  • EINECS 201-051-3
  • HSDB 5216
  • NSC 8652
  • T10
  • UNII-34032MQ9RO

Systematic Names

  • 2,4-Imidazolidinedione, 5,5-dimethyl-
  • 5,5-Dimethylhydantoin
  • Hydantoin, 5,5-dimethyl-

Superlist Name

  • 5,5-Dimethylhydantoin

Registry Numbers

CAS Registry Number

  • 77-71-4

FDA UNII

  • 34032MQ9RO

Other Registry Number

  • 25154-41-0

System Generated Number

  • 0000077714

Structure Descriptors

InChI

1S/C5H8N2O2/c1-5(2)3(8)6-4(9)7-5/h1-2H3,(H2,6,7,8,9)

InChIKey

YIROYDNZEPTFOL-UHFFFAOYSA-N

Smiles

CC1(C(=O)NC(=O)N1)C

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 oral 8430mg/kg (8430mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

LUNGS, THORAX, OR RESPIRATION: DYSPNEA

BEHAVIORAL: WITHDRAWAL
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 47(6), Pg. 76, 1982.
guinea pig LD50 unreported 5600mg/kg (5600mg/kg) LUNGS, THORAX, OR RESPIRATION: DYSPNEA

GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 46(5), Pg. 69, 1981.
mammal (species unspecified) LD50 unreported 15950mg/kg (15950mg/kg) LUNGS, THORAX, OR RESPIRATION: DYSPNEA

GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 46(5), Pg. 69, 1981.
mouse LD50 subcutaneous 2800mg/kg (2800mg/kg)   Arzneimittel-Forschung. Drug Research. Vol. 4, Pg. 723, 1954.
mouse LD50 unreported 10gm/kg (10000mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS

LUNGS, THORAX, OR RESPIRATION: DYSPNEA
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 46(5), Pg. 69, 1981.
rabbit LD50 oral 12660mg/kg (12660mg/kg) LUNGS, THORAX, OR RESPIRATION: DYSPNEA

BEHAVIORAL: REGIDITY

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 47(6), Pg. 76, 1982.
rat LD50 oral 7800mg/kg (7800mg/kg) BEHAVIORAL: WITHDRAWAL

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

LUNGS, THORAX, OR RESPIRATION: DYSPNEA
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 47(6), Pg. 76, 1982.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 178 deg C   EXP
pKa Dissociation Constant 9.19 (none) 24 EXP
log P (octanol-water) -0.48 (none)   EXP
Water Solubility 1.00E+05 mg/L 10 EXP
Vapor Pressure 2.80E-06 mm Hg 25 EST
Henry's Law Constant 2.77E-09 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 3.06E-12 cm3/molecule-sec 25 EST

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