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CAS No 81-82-3 , 3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxychromen-2-one

  • Name: 3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxychromen-2-one
  • Synonyms: Ratilan; Tomorin; Cumachlor [German]; p-Chlorowarfarin;3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxychromen-2-one; Cumachloor [Dutch]; Geigy rodenticide exp. 332; Kumachlor [Czech];
  • CAS Registry Number:
  • Transport: UN 2811
  • Melting Point: 168-170 ºC
  • Density: 1.384 g/cm3
  • Refractive index: 1.641
  • Safety Statements: R48/22;R52/53
  • Hazard Symbols: Xn: Harmful;
  • EINECS: 201-378-1
  • Molecular Weight: 342.773
  • InchiKey: DEKWZWCFHUABHE-UHFFFAOYSA-N
  • InChI: InChI=1S/C19H15ClO4/c1-11(21)10-15(12-6-8-13(20)9-7-12)17-18(22)14-4-2-
    3-5-16(14)24-19(17)23/h2-9,15,22H,10H2,1H3
  • Risk Statements: S37;S61
  • Molecular Formula: C19H15ClO4
  • Molecular Structure:CAS No:81-82-3 3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxychromen-2-one

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References of 3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxychromen-2-one
Title: Coumachlor
CAS Registry Number: 81-82-3
CAS Name: 3-[1-(4-Chlorophenyl)-3-oxobutyl]-4-hydroxy-2H-1-benzopyran-2-one
Synonyms: 3-(a-acetonyl-p-chlorobenzyl)-4-hydroxycoumarin; 3-(a-p-chlorophenyl-b-acetylethyl)-4-hydroxycoumarin
Manufacturers' Codes: G-21133
Molecular Formula: C19H15ClO4
Molecular Weight: 342.77
Percent Composition: C 66.58%, H 4.41%, Cl 10.34%, O 18.67%
Literature References: Structural analog of warfarin. Prepn: F. Litvan, W. Stoll, US 2648682 (1953 to J. R. Geigy). Anticoagulant activity: M. Reiff, R. Weismann, Acta Trop. 8, 97 (1951), C.A. 50, 10976d (1956). Review of comparative toxicology: H. Wanntorp, Acta Pharmacol. Toxicol. 16, Suppl. 2, 123 pp (1959).
Properties: Crystals, mp 169-171°. Sol in alc, acetone, chloroform. Slightly sol in benzene, ether. Practically insol in water. MLD in dog, swine (mg/kg): <5, <5 orally (Wanntorp).
Melting point: mp 169-171°
Toxicity data: MLD in dog, swine (mg/kg): <5, <5 orally (Wanntorp)
CAUTION: Similar to warfarin, with delayed actions on prothrombin level and blood clotting, resulting in death by hemorrhage. See Clinical Toxicology of Commercial Products, R.E. Gosselin et al., Eds. (Williams & Wilkins, Baltimore, 5th ed., 1984) Section II, pp 348.
Use: Rodenticide.