109757-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109757-56-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,7,5 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 109757-56:
(8*1)+(7*0)+(6*9)+(5*7)+(4*5)+(3*7)+(2*5)+(1*6)=154
154 % 10 = 4
So 109757-56-4 is a valid CAS Registry Number.
109757-56-4Relevant academic research and scientific papers
Usui, Shuji,Fukazawa, Yoshimasa
, p. 91 - 92 (1987)
The metacyclophadiones have been successfully synthesized from ο-(m-bromo-phenyl)alkan-2-one (2a-f) by the photoinduced SRN1 reaction.The anti structure has been suggested for all thephanes whose m number are less than seven.
