226994-54-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 226994-54-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,6,9,9 and 4 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 226994-54:
(8*2)+(7*2)+(6*6)+(5*9)+(4*9)+(3*4)+(2*5)+(1*4)=173
173 % 10 = 3
So 226994-54-3 is a valid CAS Registry Number.
226994-54-3Relevant academic research and scientific papers
Synthesis of some benzopyranoquinoline derivatives
Mulwad,Mahaddalkar
, p. 29 - 32 (2007/10/03)
4-Chlorocoumarins on condensation with anthranilic acid afford 4-(2'- carboxyphenylamino)-2H-(1)-benzopyran-2-ones 1 which on cyclisation with polyphosphoric acid yield 7,12-dihydro-6H-[1]benzopyrano[4,3-b]quinoline- 6,7-diones 2. Compounds 1 on treatment
