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CAS No 71-30-7 , 6-amino-1H-pyrimidin-2-one

  • Name: 6-amino-1H-pyrimidin-2-one
  • Synonyms: 4-amino-;4-Amino-2-hydroxypyrimidine; Cytosinimine; 71-30-7;6-amino-1H-pyrimidin-2-one; 4-Amino-2(1H)-pyrimidinone; 2(1H)-Pyrimidinone;
  • CAS Registry Number:
  • Transport: HAZARD
  • Melting Point: 300 ºC
  • Density: 0,48 g/cm3
  • Refractive index: 1.688
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • EINECS: 200-749-5
  • Molecular Weight: 111.102
  • InchiKey: OPTASPLRGRRNAP-UHFFFAOYSA-N
  • InChI: InChI=1S/C4H5N3O/c5-3-1-2-6-4(8)7-3/h1-2H,(H3,5,6,7,8)
  • Risk Statements: S26;S36
  • Molecular Formula: C4H5N3O
  • Molecular Structure:CAS No:71-30-7 6-amino-1H-pyrimidin-2-one
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71-30-7 Cytosine

  • Cytosine
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71-30-7 Cytosine

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71-30-7 Cytosine

  • Cytosine4-Amino-2-pyrimidinol, 98%
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71-30-7 Cytosine

  • Cytosine
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71-30-7 Cyto sine

  • Cyto sineCyto sine, 98%
  • China PMIDA AGROCHEMICAL CO.,LTD [Manufacturer]
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71-30-7 Cytosine

  • Cytosine
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71-30-7 Cyto sine

  • Cyto sine, 98%
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71-30-7 Cytosine

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71-30-7 Cytosine

  • Cytosine
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71-30-7 Cytosine

  • Cytosine
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References of 6-amino-1H-pyrimidin-2-one
Title: Cytosine
CAS Registry Number: 71-30-7
CAS Name: 4-Amino-2(1H)-pyrimidinone
Synonyms: 4-amino-2-oxo-1,2-dihydropyrimidine; 4-amino-2-pyrimidinol; 4-amino-2-hydroxypyrimidine
Molecular Formula: C4H5N3O
Molecular Weight: 111.10
Percent Composition: C 43.24%, H 4.54%, N 37.82%, O 14.40%
Literature References: Widely distributed in nature; constituent of nucleic acids. Isoln by hydrolysis of thymus nucleic acids: Levene, Bass, Nucleic Acids (New York, 1931) p 57. Syntheses: Hilbert, Johnson, J. Am. Chem. Soc. 52, 1152 (1930); Hilbert et al., ibid. 57, 552 (1935); cf. Hunter, Hlynka, Biochem. J. 31, 486 (1937); Ballweg, Tetrahedron Lett. 1968, 2171; David, Lubineau, Bull. Soc. Chim. Fr. 1969, 816. Synthesis from carbon dioxide and ammonia on kaolinite: G. R. Harvey et al., Naturwissenschaften 58, 624 (1971). Exists in keto form. Structure: Barker, Marsh, Acta Crystallogr. 17, 1581 (1964); of monohydrate: Jeffrey, Kinoshita, ibid. 16, 20 (1963); R. J. McClure, B. M. Craven, ibid. B29, 1234 (1973). Tautomerism: Y. P. Wong, J. Am. Chem. Soc. 95, 3511 (1973). Review: Ts'o, "Bases, Nucleosides and Nucleotides" in Basic Principles in Nucleic Acid Chemistry vol. 1, P. O. P. Ts'o, Ed. (Academic Press, New York, 1974) pp 453-584.
 
Derivative Type: Monohydrate
Properties: Lustrous monoclinic or triclinic platelets from water. Anhydr at 100°; brown around 300°; dec 320-325°. uv max (pH 8.8): 196.5, 267 nm (e ′ 10-3 22.5, 6.1). pK1 4.60; pK2 12.16. One gram dissolves in 130 ml water. Slightly sol in alcohol, insol in ether. Gives red color when dissolved in soln of sodium hypochlorite to which a drop of NH4OH is added. Forms salts with acids.
pKa: pK1 4.60; pK2 12.16
Absorption maximum: uv max (pH 8.8): 196.5, 267 nm (e ′ 10-3 22.5, 6.1)