139258-05-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139258-05-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,5 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 139258-05:
(8*1)+(7*3)+(6*9)+(5*2)+(4*5)+(3*8)+(2*0)+(1*5)=142
142 % 10 = 2
So 139258-05-2 is a valid CAS Registry Number.
139258-05-2Relevant academic research and scientific papers
Captodative α,β-unsaturated oxazolines as dienophiles in the asymmetric Diels-Alder reaction
Langlois, Yves,Pouilhes, Annie
, p. 1223 - 1230 (2007/10/02)
Captodative oxazoline derivative 5a gave rise to four-cycloadducts 6, 7, 8 and 9 in the presence of trifluoroacetic anhydride and cyclopentadiene.Hydrolysis of 6 led to α-phenylthio carboxylic acid 14.
