151749-39-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 151749-39-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,1,7,4 and 9 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 151749-39:
(8*1)+(7*5)+(6*1)+(5*7)+(4*4)+(3*9)+(2*3)+(1*9)=142
142 % 10 = 2
So 151749-39-2 is a valid CAS Registry Number.
151749-39-2Relevant academic research and scientific papers
Sequential[3,3]sigmatropic rearrangement of 1-aryloxy-4-(4'-coumarinyloxy)but-2-ynes
Majumdar,Das,Jana
, p. 2171 - 2183 (2007/10/02)
1-Aryloxy-4-(4'-coumarinyloxy)but-2-ynes (4) when subjected to thermal rearrangement in refluxing N,N-diethyl aniline gave 4-methyl-3-(2'-hydroxyphenyl)pyrano[3,2-c][1]benzopyran-5(4H)-one derivatives (5). The same products (5) were also obtained when 4-a
