123191-09-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123191-09-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,1,9 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 123191-09:
(8*1)+(7*2)+(6*3)+(5*1)+(4*9)+(3*1)+(2*0)+(1*9)=93
93 % 10 = 3
So 123191-09-3 is a valid CAS Registry Number.
123191-09-3Relevant articles and documents
Desulfation and rearrangement of tigemonam to an isoxazolidin-5-one and the synthesis of the rearrangement product
Singh,Kissick,Fox,Kocy,Mueller
, p. 17 - 21 (2007/10/02)
The β-lactam antibiotic Tigemonam undergoes desulfation to the N-hydroxyazetidinone, which rearranges to the isoxazolidin-5-one. the structure of the rearrangement product was confirmed by synthesis.
