154261-25-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 154261-25-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,4,2,6 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 154261-25:
(8*1)+(7*5)+(6*4)+(5*2)+(4*6)+(3*1)+(2*2)+(1*5)=113
113 % 10 = 3
So 154261-25-3 is a valid CAS Registry Number.
154261-25-3Relevant academic research and scientific papers
Aza-Claisen rearrangements initiated by acid-catalyzed Michael addition
Vedejs, Edwin,Gingras, Marc
, p. 579 - 588 (2007/10/02)
The reaction of allylic amines with dimethyl acetylenedicarboxylate is subject to protic acid catalysis and affords 15, the product of Michael addition and aza-Claisen rearrangement. The sequence involves Michael addition of 4c or 19-21 to generate an int
