433223-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 433223-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,3,2,2 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 433223-81:
(8*4)+(7*3)+(6*3)+(5*2)+(4*2)+(3*3)+(2*8)+(1*1)=115
115 % 10 = 5
So 433223-81-5 is a valid CAS Registry Number.
433223-81-5Relevant articles and documents
A facile synthesis of 2,3-disubstituted Pyrido[2,3-h]quinazolin-4(3H)-ones
Aruna Kumari,Satyanarayana Reddy,Prasad Rao, P. Jaya
, p. 235 - 240 (2002)
Synthesis of 2-substituted-4H-Pyrido[2,3-h]benzoxazin-4-ones (2) from 5-Aminoquinoline-6-carboxylic acid (1) and their conversion to 2,3-disubstituted Pyrido[2,3-h]quinazolin-4(3H)-ones(3) is reported.
