78121-22-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78121-22-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,1,2 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 78121-22:
(7*7)+(6*8)+(5*1)+(4*2)+(3*1)+(2*2)+(1*2)=119
119 % 10 = 9
So 78121-22-9 is a valid CAS Registry Number.
78121-22-9Relevant academic research and scientific papers
Synthesis and some transformations of 4H-pyrano[3,2-d]pyrazoles
Mityurina,Kharchenko,Cherkesova
, p. 237 - 239 (2007/10/02)
The ability of the amide carbonyl group of the pyrazolone ring to participate in the heterocyclization of oxopropyl-5-pyrazolones under the influence of polyphosphoric acid (PPA) or phosphorus polysulfide in dioxane with the formation of 4H-pyrano[ 3,2-d]
