117970-59-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117970-59-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,7 and 0 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 117970-59:
(8*1)+(7*1)+(6*7)+(5*9)+(4*7)+(3*0)+(2*5)+(1*9)=149
149 % 10 = 9
So 117970-59-9 is a valid CAS Registry Number.
117970-59-9Relevant academic research and scientific papers
SYNTHESIS OF HORMOTHAMNIONE
Alonso, Ricardo,Brossi, Arnold
, p. 735 - 738 (2007/10/02)
Hormothamnione 1 has been obtained from 2,3-dimethyl-5,6,7,8-tetramethoxy-chromone 18 in 63percent yield.Synthesis of the required chromone 18 as well as of the 2 and 3-styryl analogs 5 and 9 are described.
