203509-88-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203509-88-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,5,0 and 9 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 203509-88:
(8*2)+(7*0)+(6*3)+(5*5)+(4*0)+(3*9)+(2*8)+(1*8)=110
110 % 10 = 0
So 203509-88-0 is a valid CAS Registry Number.
203509-88-0Relevant articles and documents
Synthesis of spiroheterocyclic systems from barbituric acids and N,N-disubstituted o-aminobenzaldehydes
Krasnov,Kartsev
, p. 901 - 906 (2005)
Reactions of barbituric, 1,3-dimethylbarbituric, and 2-thiobarbituric acids with 2-(1-pyrrolidinyl)benzaldehyde, its 6- and 7-membered homologs, and 4-phenylpiperazine and morpholine analogs lead to formation of fused systems with a spirocyclic 2,4,6-trio
