1219795-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1219795-57-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,9,7,9 and 5 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1219795-57:
(9*1)+(8*2)+(7*1)+(6*9)+(5*7)+(4*9)+(3*5)+(2*5)+(1*7)=189
189 % 10 = 9
So 1219795-57-9 is a valid CAS Registry Number.
1219795-57-9Relevant academic research and scientific papers
Photochemical synthesis of tetraaryl-substituted pentacenes
Katsuta, Shuhei,Yamada, Hiroko,Okujima, Tetsuo,Uno, Hidemitsu
supporting information; experimental part, p. 1397 - 1400 (2010/04/25)
The syntheses of 1,4,8,11-tetraphenylpentacene and 1,4,8,11-tetra(2′-thienyl)pentacene are described via photodecarbonylation of the corresponding α-diketone precursors.
