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CAS No 481-42-5 , 5-hydroxy-2-methylnaphthalene-1,4-dione

  • Name: 5-hydroxy-2-methylnaphthalene-1,4-dione
  • Synonyms: 2-Methyljuglone; 481-42-5; Plumbaein;5-Hydroxy-2-methyl-1,4-naphthoquinone; Plumbagone; 2-Methyl-5-hydroxy-1,4-naphthoquinone; Plumbagine;5-hydroxy-2-methylnaphthalene-1,4-dione;
  • CAS Registry Number:
  • Transport: UN 2923 8/PG 2
  • Melting Point: 76-78 °C(lit.)
  • Flash Point: 200.2°C
  • Boiling Point: 383.9°C at 760 mmHg
  • Density: 1.354g/cm3
  • Refractive index: 1.63
  • Safety Statements: Poison by ingestion and intraperitoneal routes. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.
  • Hazard Symbols: T
  • Flash Point: 200.2°C
  • EINECS: 207-569-6
  • Molecular Weight: 188.17942
  • InchiKey: VCMMXZQDRFWYSE-UHFFFAOYSA-N
  • InChI: InChI=1S/C11H8O3/c1-6-5-9(13)10-7(11(6)14)3-2-4-8(10)12/h2-5,12H,1H3
  • Risk Statements: R23/24/25;
  • Molecular Formula: C11H8O3
  • Molecular Structure:CAS No:481-42-5 5-hydroxy-2-methylnaphthalene-1,4-dione

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References of 5-hydroxy-2-methylnaphthalene-1,4-dione
Title: Plumbagin
CAS Registry Number: 481-42-5
CAS Name: 5-Hydroxy-2-methyl-1,4-naphthalenedione
Synonyms: 5-hydroxy-2-methyl-1,4-naphthoquinone
Molecular Formula: C11H8O3
Molecular Weight: 188.18
Percent Composition: C 70.21%, H 4.29%, O 25.51%
Literature References: Found in the roots of Plumbago europaea L., P. zeylanica, P. rosea L., Plumbaginaceae. Isoln: Dulong d'Astafort, J. Pharm. Chim. 14, 441 (1828); Wefers-Bettink, Rec. Trav. Chim. 8, 319 (1889); Ray, Dutt, J. Indian Chem. Soc. 5, 419 (1928). Structure and synthesis: Fieser, Dunn, J. Am. Chem. Soc. 58, 572 (1936). Biosynthesis: Durand, Zenk, Tetrahedron Lett. 1971, 3009. Chemotherapeutic properties: Vichkanova et al., C.A. 78, 66906s (1973). Efficient syntheses: A. Ichihara et al., Agric. Biol. Chem. 44, 211 (1980); G. Wurm et al., Arch. Pharm. 314, 861, 1055 (1981); H. M?hrle, H. Foltmann, ibid. 321, 259 (1988). Toxicity data: M. Debray et al., Plant Med. Phytother. 7, 77 (1973), C.A. 79, 14255e (1973).
Properties: Yellow needles from dil alcohol, mp 78-79°. Sublimes. Volatile with steam. Slightly sol in hot water; sol in alc, acetone, chloroform, benzene, acetic acid. LD50 i.p. in mice: ~0.015 g/kg (Debray).
Melting point: mp 78-79°
Toxicity data: LD50 i.p. in mice: ~0.015 g/kg (Debray)