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Argpyrimidine
CAS number: 195143-52-3
Argpyrimidine is a member of the class of hydroxypyrimidines obtained by cyclocondensation of L-arginine and methylglyoxal.

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Chemical structures of the investigated Maillard reaction prod- ucts fructoselysine (1), lactuloselysine (2), tagatoselysine (3), CML (4), CEL (5), formyline (6), pyrraline (7), maltosine (8), MG-H1 (9), argpyrimidine (10), and pentosidine (11).
Chemical structures of the investigated Maillard reaction prod- ucts fructoselysine (1), lactuloselysine (2), tagatoselysine (3), CML (4), CEL (5), formyline (6), pyrraline (7), maltosine (8), MG-H1 (9), argpyrimidine (10), and pentosidine (11).
Syntheses of N5-(5-methyl-4-oxo-5-hydroimidazolon-2-yl)-l-ornithine (MG-H1, 9) and N5-(5-hydroxy-4,6-dimethylpyrimidin-2-yl)-l-ornithine (argpyrimidine, Apy, 10). a) l-Arg, HCl (12n), RT, 8 h. b) DMSO, NaOAc, RT, 3 h. c) l-Arg, HCl (12n), RT, 20 h.
Syntheses of N5-(5-methyl-4-oxo-5-hydroimidazolon-2-yl)-l-ornithine (MG-H1, 9) and N5-(5-hydroxy-4,6-dimethylpyrimidin-2-yl)-l-ornithine (argpyrimidine, Apy, 10). a) l-Arg, HCl (12n), RT, 8 h. b) DMSO, NaOAc, RT, 3 h. c) l-Arg, HCl (12n), RT, 20 h.

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