309924-69-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309924-69-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,9,2 and 4 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 309924-69:
(8*3)+(7*0)+(6*9)+(5*9)+(4*2)+(3*4)+(2*6)+(1*9)=164
164 % 10 = 4
So 309924-69-4 is a valid CAS Registry Number.
309924-69-4Relevant academic research and scientific papers
A convenient preparation of 1,3-disubstituted dihydro-2,4-(1H,3H) pyrimidinediones
Deck,Papadopoulos
, p. 675 - 680 (2007/10/03)
The ureas 3 which are obtained from 3-(benzylamino)propanenitrile (1) and various isocyanates (2) cyclize readily upon heating in ethanol, in the presence of hydrochloric acid, to form 3-substituted 1-benzyldihydro-2,4-(1H,3H)pyrimidinediones (11) in good
