Number | Name | Date | Kind |
---|---|---|---|
4298741 | Christsen et al. | Nov 1981 | |
4310538 | Christsen et al. | Jan 1982 |
Number | Date | Country |
---|---|---|
0185315 | Jun 1986 | EPX |
Entry |
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CA113:1149371 "Preparation of Azetidinone Intermediates for Carbapenems" Uyeo, Shoichiro (1990). |