1M Material: OS4442, PBDTTTPD, PBDTT-TPD 

Other Names/Code: PBDTTTPD, PBDTT-TPD 

Chemical Name: poly[(5,6-dihydro-5-octyl-4,6-dioxo-4H-thieno[3,4-c]pyrrole-1,3- diyl)[4,8-bis[5-(2-ethylhexyl)-2-thienyl]benzo[1,2-b:4,5- b']dithiophene-2,6-diyl], 

CAS No.: 1426534-44-2 

Lot number: YY22258CH 

Appearance: Deep brown fine particles Molecular weight (GPC): Mw~ 50k; PDI ~ 2.5 (PS standards) 

Solubility: Soluble in CHCl3, chlorobenzene and other selected non-chlorinated solvents 

NMR analysis: Structure confirmed. 

Assay: 99+% (basing on NMR of monomers)