134457-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134457-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,4,5 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 134457-71:
(8*1)+(7*3)+(6*4)+(5*4)+(4*5)+(3*7)+(2*7)+(1*1)=129
129 % 10 = 9
So 134457-71-9 is a valid CAS Registry Number.
134457-71-9Relevant articles and documents
Enantioselective Total Synthesis of Indolizidine Alkaloids (-)-205A and (-)-235B
Polniaszek, Richard P.,Belmont, Stephen E.
, p. 4868 - 4874 (2007/10/02)
Enantioselective total syntheses of indolizidine alkaloids (-)-205A and (-)-235B are described.The syntheses proceed via a common late-stage intermediate, α-aminonitrile 1.Absolute stereochemical control over the C8 and C8a stereocenters in these material
