?1kg of main material ---- precursor
? N , N - Dimethylformamide ( CAS :68-12-2) (2kgs/2L) abbr : DMF
? Potassium carbonate ( CAS :584-08-7)( powder not crystal )(856g)
?5-Bromo -1- pentene ( CAS :1119-51-3)((465g)
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