66643-67-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66643-67-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,4 and 3 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 66643-67:
(7*6)+(6*6)+(5*6)+(4*4)+(3*3)+(2*6)+(1*7)=152
152 % 10 = 2
So 66643-67-2 is a valid CAS Registry Number.
66643-67-2Relevant articles and documents
Photoinduced Electron-Transfer-Initiated Aromatic Cyclization
Maruyama, Kazuhiro,Otsuki, Tetsuo,Tai, Seiji
, p. 52 - 60 (2007/10/02)
Photochemical reaction of substituted 1,4-naphthoquinones with 1,1-diarylethylenes led primarily to benzanthracene-7,12-dione derivatives.Evidence was obtained that the photoreaction proceeded via a photoinduced electron-transfer process.Extension of t
