117970-58-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117970-58-8 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 8 respectively.
Calculate Digit Verification of CAS Registry Number 117970-58:
(8*1)+(7*1)+(6*7)+(5*9)+(4*7)+(3*0)+(2*5)+(1*8)=148
148 % 10 = 8
So 117970-58-8 is a valid CAS Registry Number.
117970-58-8Relevant articles and documents
SYNTHESIS OF HORMOTHAMNIONE
Alonso, Ricardo,Brossi, Arnold
, p. 735 - 738 (1988)
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.