5449-32-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5449-32-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,4,4 and 9 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 5449-32:
(6*5)+(5*4)+(4*4)+(3*9)+(2*3)+(1*2)=101
101 % 10 = 1
So 5449-32-1 is a valid CAS Registry Number.
5449-32-1Relevant articles and documents
A NEW SYNTHESIS OF SUBSTITUTED SPIRO BUTYROLACTONES VIA DYOTROPIC REARRANGEMENT
Black, T.Howard,DuBay III, William J.
, p. 4787 - 4788 (2007/10/02)
Spiro butyrolactones bearing various α-substituents have been synthesized in three steps from acetic acid derivatives; the sequence employs a dyotropic rearrangement as its pivotal step.