956904-39-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 956904-39-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,6,9,0 and 4 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 956904-39:
(8*9)+(7*5)+(6*6)+(5*9)+(4*0)+(3*4)+(2*3)+(1*9)=215
215 % 10 = 5
So 956904-39-5 is a valid CAS Registry Number.
956904-39-5Relevant articles and documents
Novel fluorene-based biphenolic monomer: 9,9-Bis(4-hydroxyphenyl)-9- silafluorene
Seesukphronrarak, Surasak,Takata, Toshikazu
, p. 1138 - 1139 (2007)
A 9-silafluorene-containing biphenolic monomer, 9,9-bis(4hydroxyphenyl)-9- silafluorene, was prepared from 9,9-dichloro9-silafluorene and employed for the synthesis of polyesters using a fluorene-based homoditopic acid chloride. Some properties of the pol