1552957-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1552957-91-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,5,2,9,5 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1552957-91:
(9*1)+(8*5)+(7*5)+(6*2)+(5*9)+(4*5)+(3*7)+(2*9)+(1*1)=201
201 % 10 = 1
So 1552957-91-1 is a valid CAS Registry Number.
1552957-91-1Relevant articles and documents
Highly phenylated polyimides containing 4,4′-diphenylether moiety
Chen, Jyh-Chien,Wu, Jin-An,Li, Shih-Wei,Chou, Shang-Chih
, p. 23 - 31 (2014/04/03)
A new aromatic diamine, 2,2′,6,6′-tetraphenyl-4,4′- oxydianiline (4PhODA, 4), has been synthesized by oxidation, bromination, Suzuki coupling and reduction of 4,4′-oxydianiline (4,4′-ODA). Highly phenylated polyimides PI7a-f were prepared from diamine 4 a
