prov:value
| - , R3 and R4 may be conjoined with the N atom to form a heterocyclic ring such as a morpholinyl ring, X is an anion and n is the valency of X. Suitable anions (X-) are Cl-, HSO4 -, SO4 --, C2 H5 SO4 -, CH3 SO4 - , HCOO-, CH3 COO-, Br-, I- and H2 PO4 -, of which the chloride, sulphate, bromide and acetate ions are preferred.
|