142751-45-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142751-45-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,7,5 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 142751-45:
(8*1)+(7*4)+(6*2)+(5*7)+(4*5)+(3*1)+(2*4)+(1*5)=119
119 % 10 = 9
So 142751-45-9 is a valid CAS Registry Number.
142751-45-9Relevant articles and documents
New procedures for the preparation of isoflavones with unsubstituted ring A
Levai,Sebok
, p. 1735 - 1750 (2007/10/02)
Isoflavones with unsubstituted ring A have been synthesized either by the ring closure of 2-hydroxydeoxybenzoins or by the dehydroxylation of 7-hydroxyisoflavones. 7-Mercaptoisoflavones have also been prepared.
