165558-03-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 165558-03-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,5,5,5 and 8 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 165558-03:
(8*1)+(7*6)+(6*5)+(5*5)+(4*5)+(3*8)+(2*0)+(1*3)=152
152 % 10 = 2
So 165558-03-2 is a valid CAS Registry Number.
165558-03-2Relevant articles and documents
Synthesis of Bridged Isoflavone Derivatives
Levai, A.,Patonay, T.
, p. 219 - 226 (1995)
7-Chloroalkoxyisoflavones (10-26) have been prepared by chemoselective - in the case of 5,7-dihydroxyisoflavones also regioselective - alkylation of hydroxyisoflavones (3-9) with α-bromo-ω-chloroalkanes.Compounds 10-26 were allowed to react either with 2'
