244109-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 244109-21-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,4,1,0 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 244109-21:
(8*2)+(7*4)+(6*4)+(5*1)+(4*0)+(3*9)+(2*2)+(1*1)=105
105 % 10 = 5
So 244109-21-5 is a valid CAS Registry Number.
244109-21-5Relevant articles and documents
Synthesis of Eight-membered Oxa-λ5-stiba Heterocycles from Triphenylantimony, Dihydroxysilanes, and Phenylboronic Acid
Zaburdyaeva, S. N.,Korchemnaya, L. S.,Fedorov, A. Yu.,Dodonov, V. A.
, p. 82 - 84 (2007/10/03)
Reactions of triphenylantimony with diethyl(or diphenyl)dihydroxysilane or phenylboronic acid in the presence of tert-butyl hydroperoxide yield eight-membered oxa-λ5-stiba heterocycles.
