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958255-23-7

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958255-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 958255-23-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,8,2,5 and 5 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 958255-23:
(8*9)+(7*5)+(6*8)+(5*2)+(4*5)+(3*5)+(2*2)+(1*3)=207
207 % 10 = 7
So 958255-23-7 is a valid CAS Registry Number.

958255-23-7Downstream Products

958255-23-7Relevant articles and documents

Total synthesis of antibacterial dibromotyrosine derived alkaloid purpuramine-K#

Reddy, S. Malla,Srinivasulu,Venkateswarlu

, p. 2757 - 2762 (2007/10/03)

The first total synthesis of a dibromotyrosine derived alkaloid purpuramine K 1 reported for possible anti-bacterial activity against gram-positive bacteria viz: Staphylococcus aureus, Bacillus subtilis, Bacillus sphaericus and gram-negative bacteria like Chromobacterium violaceum, Klebsiella aerogenes, and Pseudomonas aeruginosa has been achieved. The synthesis involves preparation of methyl-3-bromopropyl carbamate 6, and Boc protected 2-[3,5-dibromo, 4-hydroxy phenyl] ethyl amine 13 which is followed by coupling of these two structural fragments to give corresponding ether 14. After deprotection of Boc group in compound 14, it is reacted with 4-hydroxyphenyl pyruvic acid oxime derivative 17 using EDCI/HOBT to give compound 18, which is further transformed to purpuramine K.

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