63800-01-1 Hydroxylysylpyridinoline Pyridinium, 4-((2S)-2-amino-2-carboxyethyl)-1-((2R,5S)-5-amino-5-carboxy-2-hydroxypentyl)-3-((3S)-3-amino-3-carboxypropyl)-5-hydroxy-, inner salt Pyridinium, 4-(2-amino-2-carboxyethyl)-1-(5-amino-5-carboxy-2-hydroxypentyl)-3-(3-amino-3-carboxypropyl)-5-hydroxy-, hydroxide, inner salt Pyridinoline