209069-71-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209069-71-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,0,6 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 209069-71:
(8*2)+(7*0)+(6*9)+(5*0)+(4*6)+(3*9)+(2*7)+(1*1)=136
136 % 10 = 6
So 209069-71-6 is a valid CAS Registry Number.
209069-71-6Relevant articles and documents
Synthesis of 4-alkyl- or 4-phenyl-7-methyl-1,2-dihydro-7H-imidazo[1,2,3-cd]purine-6,8-diones
Simo, Ondrej,Rybar, Alfonz,Alfoeldi, Juraj
, p. 407 - 415 (2007/10/03)
New 4-alkyl- or 4-phenyl-7-methyl-1,2-dihydro-7H-imidazo[1,2,3-cd]purine-6,8-diones 1 were obtained by intramolecular alkylation of 8-alkyl-or 8-phenyl-9-(2-mesyloxyethyl)-1-methyl-9H-purine-2,6(1H,3H)-diones 5. The necessary compounds 5 were prepared fro
