224319-23-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 224319-23-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,4,3,1 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 224319-23:
(8*2)+(7*2)+(6*4)+(5*3)+(4*1)+(3*9)+(2*2)+(1*3)=107
107 % 10 = 7
So 224319-23-7 is a valid CAS Registry Number.
224319-23-7Relevant articles and documents
DIKETOPYRROLOPYRROLE OLIGOMERS AND COMPOSITIONS, COMPRISING DIKETOPYRROLOPYRROLE OLIGOMERS
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Page/Page column 82, (2017/09/14)
The present invention relates to compositions, comprising (a) a compound of the formula and (b) a polymeric material, to specific oligomers of the formula I, and their use as organic semiconductor in organic devices, especially in organic photovoltaics (s