Synonyms: 3308-52-9;Vitamin D2 3beta sulfate;1784-46-9;(1R,3aR,4E,7aS)-1-[(E,2S,5R)-5,6-dimethylhept-3-en-2-yl]-7a-methyl-4-[(2Z)-2-[(5R)-2-methylidene-5-sulfooxy-cyclohexylidene]ethylidene]-2,3,3a,5,6,7-hexahydro-1H-indene;Ergocalciferol hydrogen sulfate;9,10-Secoergosta-5,7,10(19),22-tetraen-3-ol, hydrogen sulfate, (3beta,5Z,7E,22E)-