1228344-74-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1228344-74-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,8,3,4 and 4 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1228344-74:
(9*1)+(8*2)+(7*2)+(6*8)+(5*3)+(4*4)+(3*4)+(2*7)+(1*4)=148
148 % 10 = 8
So 1228344-74-8 is a valid CAS Registry Number.
1228344-74-8Relevant 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
