1, carbonic anhydride is a chemical substance with the molecular formula of C7H8O3, which is a white crystal. Alias: 6,6-dimethyl -3- oxo-bicyclo.
2. Azabicyclo is a chemical substance with the molecular formula of C6H7NO and the molecular weight of 109. 13. Physical and chemical properties: light yellow to white crystalline powder. Melting point range: 55~60℃. Boiling point range:102 ~106℃ (0.25mmhg).