5234-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5234-91-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,3 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5234-91:
(6*5)+(5*2)+(4*3)+(3*4)+(2*9)+(1*1)=83
83 % 10 = 3
So 5234-91-3 is a valid CAS Registry Number.
5234-91-3Relevant articles and documents
1-PHENOXYPHOSPHOLENE 1-OXIDES
Moedritzer, Kurt,Miller, R. E.
, p. 293 - 298 (2007/10/02)
Isomerically pure samples of the isomers of 1-phenoxyphospholene 1-oxide were prepared and exhaustively characterized by 1H, 31P and 13C nmr, IR and mass spectrometry.