158751-44-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158751-44-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,7,5 and 1 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 158751-44:
(8*1)+(7*5)+(6*8)+(5*7)+(4*5)+(3*1)+(2*4)+(1*4)=161
161 % 10 = 1
So 158751-44-1 is a valid CAS Registry Number.
158751-44-1Relevant articles and documents
Mechanism of alkaline cyclization of 2-(substituted benzamido)benzamides to 4-quinazolinones
Gardner,Kanagasooriam,Smyth,Williams
, p. 6245 - 6250 (1994)
The title amides cyclize rapidly to the corresponding quinazolin-4-ones in aqueous alkaline solution at 25°C; the pseudo-first-order rate constants fit the empirical equation k(obs) = k(max) [OH-]/(K(m) + [OH-] + [OH-]sup