110993-17-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 110993-17-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,0,9,9 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 110993-17:
(8*1)+(7*1)+(6*0)+(5*9)+(4*9)+(3*3)+(2*1)+(1*7)=114
114 % 10 = 4
So 110993-17-4 is a valid CAS Registry Number.
110993-17-4Relevant articles and documents
SYNTHESE DE CETONES SPIRANNIQUES TRICYCLIQUES DERIVEES DE PRODUITS NATURELS
Berrier, Christian,Jacquesy, Jean-Claude,Renoux, Alain
, p. 212 - 218 (2007/10/02)
In SbF5-HF compound 10a is unreactive whereas esters 10b and 10c cyclize to enones 18 (b or c) and 19 (b or c).Protonation of the esters groups prevents the corresponding aromatic ring protonation and deactivation which is observed with phenol 10a.Spiroke
