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153836-53-4

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153836-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 153836-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,3,8,3 and 6 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 153836-53:
(8*1)+(7*5)+(6*3)+(5*8)+(4*3)+(3*6)+(2*5)+(1*3)=144
144 % 10 = 4
So 153836-53-4 is a valid CAS Registry Number.

153836-53-4Relevant articles and documents

Synthesis and structure-activity relationships of 1β-methylcarbapenems with quaternary ammonium side chains

Ishikawa, Katsuya,Kojima, Katsuhiko,Miyauchi, Masao,Endo, Rokuro,Yasuda, Hiroshi,Kawamoto, Isao

, p. 757 - 770 (2007/10/03)

The synthesis and antibacterial activity of 1β-methylcarbapenems with quaternary ammonium groups at the C-2 position have been studied. Two types of new carbapenem derivatives have been synthesized. These 1β-methylcarbapenems, one type having a (2S,4S)-2-[1,1-dimethyl-2-(1-piperazinyl)carbonyl]pyrrolidinio-4-ylthio group and the other type having a (2S,4S)-2-(4-carbamoylmethyl-4-methylhomopiperazinio-1-ylcarbon-yl)pyrrolidin-4 -ylthio group, show potent and well balanced antibacterial activity as well as high stability against dehydropeptidase-I. The in vivo potency of these two carbapenems was compared with that of meropenem. The structure-activity relationships leading to these carbapenems are also described.

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