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345204-05-9

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345204-05-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 345204-05-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,5,2,0 and 4 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 345204-05:
(8*3)+(7*4)+(6*5)+(5*2)+(4*0)+(3*4)+(2*0)+(1*5)=109
109 % 10 = 9
So 345204-05-9 is a valid CAS Registry Number.

345204-05-9Downstream Products

345204-05-9Relevant articles and documents

Allyl and propargyl substituted penam sulfones as versatile intermediates toward the syntheses of new β-lactamase inhbitors

Sandanayaka, Vincent P.,Feigelson, Gregg B.,Prashad, Amar S.,Yang, Youjun,Petersen, Peter J.

, p. 997 - 1000 (2007/10/03)

Several alkenyl derivatives were prepared using allyl penam sulfone as the key intermediate. Isomers of these derivatives having β configuration at C-6 showed potent acitivity against CcrA enzyme. A new method was developed to prepare propargyl penam sulfone. The majority of the triazoles prepared by this route exhibited good activity against all three representative enzymes used for the inhibition assay.

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