139766-27-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139766-27-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,7,6 and 6 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139766-27:
(8*1)+(7*3)+(6*9)+(5*7)+(4*6)+(3*6)+(2*2)+(1*7)=171
171 % 10 = 1
So 139766-27-1 is a valid CAS Registry Number.
139766-27-1Relevant articles and documents
Stereoselective synthesis of substituted tetrahydrofurans using 5-Endo- trig cyclisation reactions
Craig, Donald,Ikin, Neil J.,Mathews, Neil,Smith, Alison M.
, p. 13471 - 13494 (2007/10/03)
Sulfonyl-substituted homoallylic alcohols undergo 5-endo-trig cyclisation reactions on treatment with base, with cyclisation stereoselectivity depending on double bond geometry.