“…Compounds formulated RNHCH2SO3Na or R2NCH2S03Na, viz., N-substituted aminomethane sulfonates, result (74) when I or la and formaldehyde react in presence of sodium bisulfite, or when preformed IV or III (which may be trimeric) is treated with sodium bisulfite (75)(76)(77)(78). They are the nitrogen-system counterparts of formaldehyde sodium bisulfite, which is known to be a sulfonate (79), as is acetaldehyde sodium bisulfite (80).…”