Hymecromone

• Formula: C₁₀H₈O₃
• Molecular weight: 176.1687
• IUPAC Standard InChI: InChI=1S/C10H8O3/c1-6-4-10(12)13-9-5-7(11)2-3-8(6)9/h2-5,11H,1H3 Copy

  
• IUPAC Standard InChIKey: HSHNITRMYYLLCV-UHFFFAOYSA-N Copy
• CAS Registry Number: 90-33-5
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: 2H-1-Benzopyran-2-one, 7-hydroxy-4-methyl-; Coumarin, 7-hydroxy-4-methyl-; β-Methylumbelliferone; Bilcolic; Bilicante; Cantabilin; Cantabiline; Coumarin 4; Eurogale; Hymecromon; Imecromone; LM 94; Medilla; Mendiaxon; Omega 127; Pilot 447; 4-Methyl-7-Hydroxycoumarin; 4-Methylumbelliferon; 4-Methylumbelliferone; 7-Hydroxy-4-methylcoumarin; 7-Hydroxy-4-methyl-2-oxo-3-chromene; Cholestil; Cholonerton; Crodimon; Cumarote-C; Methylumbelliferone, β; NSC 19026; 2H-1-Benzopyran, 7-hydroxy-4-methyl-2-oxo-; 2H-1-Benzopyren-2-one, 7-hydroxy-4-methyl-; 7-Hydroxy-4-methyl-2-oxo-2H-1-benzopyran; Umbelliferone, 4-methyl-; 4-MU; 7-Hydroxy-4-methyl-2H-1-benzopyran-2-one; Biliton H; Cholspasmin; Himecol; NSC 9408
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• Information on this page:
  • Phase change data
  • Gas phase ion energetics data
  • IR Spectrum
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Mass spectrum (electron ionization)
• Options:
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Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of fusion

Entropy of fusion

Gas phase ion energetics data

Go To: Top, Phase change data, IR Spectrum, Gas Chromatography, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Sharon G. Lias and Joel F. Liebman

Ionization energy determinations

IR Spectrum

Go To: Top, Phase change data, Gas phase ion energetics data, Gas Chromatography, References, Notes

Data compiled by: Coblentz Society, Inc.

• SOLID (0.3% IN KBr PELLET); Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm^-1 resolution
• SOLID (SPLIT MULL); Not specified, most likely a grating or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 $$ SMALL FEATURES AROUND 1257 AND 1222 CM^-1 ARE PROBABLY DUE TO AN UNKNOWN cm^-1 resolution

Gas Chromatography

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Normal alkane RI, non-polar column, custom temperature program

View large format table.

References

Go To: Top, Phase change data, Gas phase ion energetics data, IR Spectrum, Gas Chromatography, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Zhang, Huang, et al., 1989
Zhang, X.; Huang, W.; Tan, F.; Xu, G.; Wu, Z., Study on phase transition thermodynamics of 4-methyl-coumarin derivative, Chin. Sci. Bull., 1989, 34(21), 1844-1845. [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Redchenko, Safronov, et al., 1992
Redchenko, V.V.; Safronov, A.I.; Kirpichenok, M.A.; Grandberg, I.I.; Traven', V.F., Electronic structure of π-systems. XV. Photoelectron spectra of 7-aminocoumarin derivatives, J. Gen. Chem. USSR, 1992, 62, 2313. [all data]

Ardrey and Moffat, 1981
Ardrey, R.E.; Moffat, A.C., Gas-liquid chromatographic retention indices of 1318 substances of toxicological interest on SE-30 or OV-1 stationary phase, J. Chromatogr., 1981, 220, 3, 195-252, https://doi.org/10.1016/S0021-9673(00)81925-1 . [all data]

Notes

Go To: Top, Phase change data, Gas phase ion energetics data, IR Spectrum, Gas Chromatography, References

• Symbols used in this document:
  

  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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