87100-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87100-77-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,1,0 and 0 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 87100-77:
(7*8)+(6*7)+(5*1)+(4*0)+(3*0)+(2*7)+(1*7)=124
124 % 10 = 4
So 87100-77-4 is a valid CAS Registry Number.
87100-77-4Relevant academic research and scientific papers
Pyranopyrazoles III synthesis of 1H-pyrano[2,3-c]pyrazol-4-ones [1]
Khan,Ellis,Pagotto
, p. 193 - 197 (2007/10/03)
Various derivatives of title ring system were synthesized by Claisen condensation of 4 acetyl-5-hydroxypyrazoles with appropriate esters, followed by acid-catalyzed ring closure.
