89238-09-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89238-09-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,2,3 and 8 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 89238-09:
(7*8)+(6*9)+(5*2)+(4*3)+(3*8)+(2*0)+(1*9)=165
165 % 10 = 5
So 89238-09-5 is a valid CAS Registry Number.
89238-09-5Relevant articles and documents
FLASH PYROLYSIS: A ROUTE TO "α-KETENIC ESTERS".
Jullien, J.,Pechine, J. M.,Perez, F.
, p. 5525 - 5526 (2007/10/02)
3-Oxo 2-propenoic acid methyl ester has been prepared by flash vacuum pyrolysis and characterized by mass spectrometry and chemical trapping.Its four-membered cyclic dimers have been isolated.