140454-97-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 140454-97-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,4,5 and 4 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 140454-97:
(8*1)+(7*4)+(6*0)+(5*4)+(4*5)+(3*4)+(2*9)+(1*7)=113
113 % 10 = 3
So 140454-97-3 is a valid CAS Registry Number.
140454-97-3Relevant academic research and scientific papers
Synthesis, Tautomerism and Stereochemistry of Spiropyrazolines
Toth, Gabor,Levai, Albert,Duddeck, Helmut
, p. 235 - 239 (2007/10/02)
1,3-Dipolar cycloaddition of (E)- and (Z)-arylidene-1-tetralone derivatives affords trans- and cis-spiro-1-pyrazolines, respectively, regio- and stereo-selectively in a one-step reaction.These rearrange into spiro-2-pyrazolines on proton catalysis.The rel
