129544-63-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129544-63-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,5,4 and 4 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 129544-63:
(8*1)+(7*2)+(6*9)+(5*5)+(4*4)+(3*4)+(2*6)+(1*3)=144
144 % 10 = 4
So 129544-63-4 is a valid CAS Registry Number.
129544-63-4Relevant academic research and scientific papers
1,3-Dipolar cycloadditions of 3-methylenecephams with diazoalkanes
Baldwin, Jack E.,Pitlik, Janos
, p. 2483 - 2486 (2007/10/02)
The 3-methylenecephams underwent 1,3-dipolar cycloaddition reactions with diazomethane to give spiropyrazolinocephams in a completely stereo- and regioselective manner. Thermal breakdown of these 1-pyrazolines led to spirocyclopropane and vinyl derivatives.
