
TY  - JOUR
A1  - Dewar, MK 
A1  - Johns, RB 
A1  - Kelly, DP 
A1  - Yates, JF 
T1  - Cross-linking of amino acids by formaldehyde. <sup>13</sup>C N.M.R. spectra of model compounds
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1975
VL  - 28
IS  - 4
SP  - 917
EP  - 924
KW  - 
UR  - https://doi.org/10.1071/CH9750917 
N2  - The use of 13C N.M.R. for the identification of the site of cross- linking of amino acids by formaldehyde has been evaluated by use of model compounds, such as 2,4-dimethylphenol for tyrosine. The 13C chemical shifts of the formaldehyde-derived methylene carbons occur within the range 50-60 p.p.m. downfield from Me4Si. Estimated shifts in lysine-lysine and tyrosine-glutamine cross-linked systems fall just outside this region. The 13C spectra of a number of related phenols, amines and protected amino acids are also reported. 
ER  -

