Species with data from:

Tian, Z.X.; Wang, X.B.; Wang, L.S.; Kass, S.R., Are Carboxyl Groups the Most Acidic Sites in Amino Acids? Gas-Phase Acidities, Photoelectron Spectra, and Computations on Tyrosine, p-Hydroxybenzoic Acid, and Their Conjugate Bases, J. Am. Chem. Soc., 2009, 131, 3, 1174-1181, https://doi.org/10.1021/ja807982k .

6 matching species were found.

For each matching species the following will be displayed:

• Chemical name
• Chemical formula
• Structure image (if available)

Click on the name to see more data.

1. Tyrosine (C₉H₁₁NO₃)
   
2. L-Tyrosine anion (C₉H₁₀NO₃^-)
   
3. Hydrogen cation (H⁺)
   
4. L-Tyrosine anion (C₉H₁₀NO₃^-)
   
5. pCO2H-phenoxide anion (C₇H₅O₃^-)
6. pOH-benzoate anion (C₇H₅O₃^-)

© 2026 by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Copyright for NIST Standard Reference Data is governed by the Standard Reference Data Act.