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154807-59-7

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154807-59-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 154807-59-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,4,8,0 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 154807-59:
(8*1)+(7*5)+(6*4)+(5*8)+(4*0)+(3*7)+(2*5)+(1*9)=147
147 % 10 = 7
So 154807-59-7 is a valid CAS Registry Number.

154807-59-7Relevant articles and documents

Studies on azopyrazole derivatives. Part 9: Synthesis and antibacterial evaluation of novel phenylhydrazones and their substituted 4-arylazopyrazole derivatives

Ergenc,Durgun,Otuk

, p. 495 - 498 (2007/10/02)

6-Methyl-2,4-heptandione (1) was coupled with diazonium salts of sulfanilamide (2) and 4-aminobenzoic acid (3). Resulting new hydrazones, namely 4-methyl-2-oxovaleraldehyde p-substituted phenylhydrazones 4 and 5, were refluxed with various hydrazines to synthesize the title compounds 6-15. Their structure elucidation was made on the basis of their analytical and spectroscopic data. The antibacterial activity was evaluated. Some of the compounds tested exerted moderate to potent antibacterial activity against Staphylococcus aureus, Stappylococcus epidermidis and Streptococcus pyogenes.

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