4425-26-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4425-26-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,2 and 5 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 4425-26:
(6*4)+(5*4)+(4*2)+(3*5)+(2*2)+(1*6)=77
77 % 10 = 7
So 4425-26-7 is a valid CAS Registry Number.
InChI:InChI=1/C16H20N2O4/c1-10(2)14(16(21)22)18-9-12(15(18)20)17-13(19)8-11-6-4-3-5-7-11/h3-7,10,12,14H,8-9H2,1-2H3,(H,17,19)(H,21,22)/t12-,14+/m0/s1
4425-26-7Relevant academic research and scientific papers
Seco-dethiacephalosporins
Wei,Borgese,Weigele
, p. 1875 - 1878 (2007/10/02)
Penicillins are converted to 'Seco-dethiacephalosporins' in a sequence consisting of Ra-Ni desulfurization, epoxidation, epoxide rearrangement and introduction of a heteroarylsulfide by nucleophilic substitution.