205450-88-0 6266-23-5 65100-53-0 65100-54-1 Carboxymethylpyridinium chloride EINECS 228-434-8 N-Carboxymethylpyridinium chloride NSC 32867 Pyridinium, 1-(carboxymethyl)-, chloride Pyridinium, 1-(carboxymethyl)-, chloride, hydroxide (2:1:1)