91508-41-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91508-41-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,0 and 8 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91508-41:
(7*9)+(6*1)+(5*5)+(4*0)+(3*8)+(2*4)+(1*1)=127
127 % 10 = 7
So 91508-41-7 is a valid CAS Registry Number.
91508-41-7Relevant academic research and scientific papers
Synthesis of 3-Alkenyl-4-oxo-6,7-dihydro-1H-pyranopyrazole Derivatives
Chantegrel, Bernard,Nadi, Abdel-Ilah,Gelin, Suzanne
, p. 17 - 19 (2007/10/02)
A series of 1-substituted 3-alkenyl-4-oxo-6,7-dihydro-1H-pyranopyrazoles was prepared by reaction of arylhydrazines or benzylhydrazine with 4,5-dioxo-2,3,7,8-tetrahydro-4H,5H-pyranopyran derivatives.
