20548-12-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20548-12-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,4 and 8 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 20548-12:
(7*2)+(6*0)+(5*5)+(4*4)+(3*8)+(2*1)+(1*2)=83
83 % 10 = 3
So 20548-12-3 is a valid CAS Registry Number.
20548-12-3Relevant articles and documents
Carbon-13 Nmr Spectroscopy of Methoxy- and Acetoxyaurones
Sharma, Anil,Chibber, S. S.
, p. 275 - 277 (2007/10/02)
The 13C nmr chemical shifts of methoxy and acetoxyaurones are reported.The signals are assigned on the basis of substituent effects and comaprison with structurally related compounds.Assignments are also verified by Sford.
