22697-40-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22697-40-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,6,9 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 22697-40:
(7*2)+(6*2)+(5*6)+(4*9)+(3*7)+(2*4)+(1*0)=121
121 % 10 = 1
So 22697-40-1 is a valid CAS Registry Number.
22697-40-1Relevant articles and documents
Novel fluorinated chromones
Saloutin, V. I.,Skryabina, Z. E.,Bazyl', I. T.,Chupakhin, O. N.
, p. 37 - 42 (2007/10/02)
The self-condensation of ethyl pentafluorobenzoylacetate leads to the formation of 3-pentafluorophenyl-1H-isopyrono-6,7,8,9-tetrafluorochromone in 37percent yield.On hydrolysis, this gave 2-pentafluorobenzoylmethyl-5,6,7,8-tetrafluorochromone.Other