228871-35-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 228871-35-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,8,8,7 and 1 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 228871-35:
(8*2)+(7*2)+(6*8)+(5*8)+(4*7)+(3*1)+(2*3)+(1*5)=160
160 % 10 = 0
So 228871-35-0 is a valid CAS Registry Number.
228871-35-0Relevant articles and documents
4-heteryl-β-lactams : A facile synthesis of 1-aryl-4- [isopropylideneamino/methyl-4(3H)-oxoquinazolin-2-yl] azetidin-2-ones
Reddy,Vasantha,Naga Raju
, p. 40 - 44 (2007/10/03)
A facile and efficient synthesis of 4-quinazolinonyl-β-lactams 9 and 10 starting from 2-chloromethylquinazolin-4(3H)-ones 1 is reported.