Detail of "143900-91-8"

CAS No.143900-91-8 2-Azetidinone, 3-(1-ethoxyethoxy)-4-phenyl-, [3R-[3a(S*),4a]]-

Specification > 98%; ee > 99.5%; The CAS is not correct presented above. Our product is (3R-cis)-3-MOPO-4-phenyl-2-azetidinone with CAS 160535-69-3, is not the 3-EEO-analogue (133066-60-1; 143900-90-7;143900-91-8).This is the side chain precursor for BMS semisynthesis of Taxol.

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