503426-27-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 503426-27-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,4,2 and 6 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 503426-27:
(8*5)+(7*0)+(6*3)+(5*4)+(4*2)+(3*6)+(2*2)+(1*7)=115
115 % 10 = 5
So 503426-27-5 is a valid CAS Registry Number.
503426-27-5Relevant articles and documents
Synthesis of 3-acetyl-4-hydroxy-1-phenylpyridin-2(1H)-one derivatives
Nikam,Kappe
, p. 215 - 220 (2015/01/30)
The cyclization of aryl ketone anilides 3 with diethyl malonate to affords 4-hydroxy-6-phenyl-6H-pyrano [3,2-c]-pyridin-2,5-diones 4 in good yields. 3-Acetyl-4-hydroxy-1-phenylpyridin-2(1H)-ones 5 are obtained by ring-opening reaction of 4-hydroxy-6-pheny
