139616-25-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139616-25-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,1 and 6 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 139616-25:
(8*1)+(7*3)+(6*9)+(5*6)+(4*1)+(3*6)+(2*2)+(1*5)=144
144 % 10 = 4
So 139616-25-4 is a valid CAS Registry Number.
139616-25-4Relevant academic research and scientific papers
Photochemical Wittig Reaction of Quasi-phosphonium Ylides
Tomioka, Hideo,Ichikawa, Naoki,Murata, Hideki
, p. 193 - 195 (2007/10/02)
α-(Methoxycarbonyl)benzylidene quasi-phosphonium ylides, which are unreactive towards most carbonyl compounds, are found to undergo the Wittig reaction upon irradiation; irradiation with acyclic carbonyl compounds, e.g. benzaldehydes and acetophenones, af
