261505-70-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 261505-70-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,1,5,0 and 5 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 261505-70:
(8*2)+(7*6)+(6*1)+(5*5)+(4*0)+(3*5)+(2*7)+(1*0)=118
118 % 10 = 8
So 261505-70-8 is a valid CAS Registry Number.
261505-70-8Relevant 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