174839-69-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 174839-69-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,4,8,3 and 9 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 174839-69:
(8*1)+(7*7)+(6*4)+(5*8)+(4*3)+(3*9)+(2*6)+(1*9)=181
181 % 10 = 1
So 174839-69-1 is a valid CAS Registry Number.
174839-69-1Relevant academic research and scientific papers
Thiaheterohelicenes 2. Synthesis of alkylated thiaheterohelicenes
Larsen, Jan,Bechgaard, Klaus
, p. 77 - 82 (2007/10/03)
The alkylated thiaheterohelicenes 1,2,3,4,6,7,9,10,11,12-decamethl-5,8-dithia[5]-helicene 1 and 6,7,9,10,12,13-hexamethl-5,8,11,14-tetrathia[9]helicene 2 have been prepared by oxidative photolysis of 1,2-diaryl-substituted ethenes. The symmetrical ethenes
