Urocanic acid
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Urocanic acid
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CAS No:
104-98-3
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Formula:
C6H6N2O2
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Chemical Name:
Urocanic acid
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Synonyms:
2-Propenoic acid,3-(1H-imidazol-5-yl)-;Imidazole-4-acrylic acid;2-Propenoic acid,3-(1H-imidazol-4-yl)-;3-(1H-Imidazol-5-yl)-2-propenoic acid;Urocanic acid;Urocaninic acid;5-Imidazoleacrylic acid;3-(1H-Imidazol-4-yl)acrylic acid;3-(4-Imidazolyl)acrylic acid;NSC 66357;3-(1H-Imidazol-4-yl)-2-propenoic acid;4-Imidazolylacrylic acid
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CAS No:
Description
Urocanic acid, produced in the upper layers of mammalian skin, is a major absorber of ultraviolet radiation (UVR).
Characteristics
66
0.50750
Solid
1.4±0.1 g/cm3
225 °C
456.9°C at 760 mmHg
230.1±21.8 °C
1.674
1500 mg/L (at 17 °C)
2-8ºC
3.87E-09mmHg at 25°C
Safety Information
NONH for all modes of transport
3
S22-S24/25
NI3425200
Stable under normal temperatures and pressures.
Computed Properties
Molecular Weight:138.12
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:3
Rotatable Bond Count:2
Exact Mass:138.042927438
Monoisotopic Mass:138.042927438
Topological Polar Surface Area:66
Heavy Atom Count:10
Complexity:156
Undefined Bond Stereocenter Count:1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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