9.46
[]. Sheryl L Wiskur, et al. Catalytic asymmetric synthesis of esters from ketenes. J Am Chem Soc. 005 May 4;7(7):676-7.

H7-H30-H34-H4
P0-P60-P64-P70-P73-P80-P30+P330+P33-P304+P340-P330-P363-P370+P378-P403-P405-P50
8 (6.)
9
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