1177441-40-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1177441-40-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,7,4,4 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1177441-40:
(9*1)+(8*1)+(7*7)+(6*7)+(5*4)+(4*4)+(3*1)+(2*4)+(1*0)=155
155 % 10 = 5
So 1177441-40-5 is a valid CAS Registry Number.
1177441-40-5Relevant academic research and scientific papers
Stereoselective synthesis of spirocyclic oxindoles via prins cyclizations
Paola Castaldi,Troast, Dawn M.,Porco Jr., John A.
supporting information; experimental part, p. 3362 - 3365 (2009/12/01)
The synthesis of spirocyclic oxindole pyran and oxepene frameworks using highly stereoselective Prins cyclizations of homoallylic and bishomoallylic alcohols and isatin ketals is described.
