57499-44-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57499-44-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,4,9 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 57499-44:
(7*5)+(6*7)+(5*4)+(4*9)+(3*9)+(2*4)+(1*4)=172
172 % 10 = 2
So 57499-44-2 is a valid CAS Registry Number.
57499-44-2Relevant articles and documents
13C Nuclear Magnetic Resonance Studies on 1,3-Diphenylprop-2-enones
Parmar, V. S.,Sharma, Sunil,Rathore, J. S.,Garg, Meenu,Gupta, Sandhya,et al.
, p. 470 - 474 (2007/10/02)
The 13C NMR spectra of 48 differently substituted chalcones (1,3-diphenylprop-2-enones) have been recorded and the results are discussed.The data will be useful in the identification of new/natural chalcones.