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1608154-34-2

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1608154-34-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1608154-34-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,8,1,5 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1608154-34:
(9*1)+(8*6)+(7*0)+(6*8)+(5*1)+(4*5)+(3*4)+(2*3)+(1*4)=152
152 % 10 = 2
So 1608154-34-2 is a valid CAS Registry Number.

1608154-34-2Relevant articles and documents

Phenylpiperazine 5,5-dimethylhydantoin derivatives as first synthetic inhibitors of Msr(A) Efflux Pump in Staphylococcus epidermidis

?es?awska, Ewa,Chudzik, Anna,Czekajewska, Joanna,Handzlik, Jadwiga,Kaczor, Aneta,Karczewska, El?bieta,Kie?-Kononowicz, Katarzyna,Latacz, Gniewomir,Nitek, Wojciech,Witek, Karolina

, (2020/10/02)

Herein, 15 phenylpiperazine 3-benzyl-5,5-dimethylhydantoin derivatives (1-15) were screened for modulatory activity towards Msr(A) efflux pump present in S. epidermidis bacteria. Synthesis, crystallographic analysis, biological studies in vitro and structure-activity relationship (SAR) analysis were performed. The efflux pump inhibitory (EPI) potency was determined by employing ethidium bromide accumulation assay in both Msr(A) efflux pump overexpressed (K/14/1345) and deficient (ATCC 12228) S. epidermidis strains. The series of compounds was also evaluated for the capacity to reduce the resistance of K/14/1345 strain to erythromycin, a known substrate of Msr(A). The study identified five strong modulators for Msr(A) in S. epidermidis. The 2,4-dichlorobenzyl-hydantoin derivative 9 was found as the most potent EPI, inhibiting the efflux activity in K/14/1345 at a concentration as low as 15.63 μM. Crystallography-supported SAR analysis indicated structural properties that may be responsible for the activity found. This study identified the first synthetic compounds able to inhibit Msr(A) efflux pump transporter in S. epidermidis. Thus, the hydantoin-derived molecules found can be an attractive group in search for antibiotic adjuvants acting via Msr(A) transporter.

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