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207805-98-9

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207805-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 207805-98-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,8,0 and 5 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 207805-98:
(8*2)+(7*0)+(6*7)+(5*8)+(4*0)+(3*5)+(2*9)+(1*8)=139
139 % 10 = 9
So 207805-98-9 is a valid CAS Registry Number.

207805-98-9Relevant articles and documents

Prodrugs: Part 3. 2-Formylphenyl esters of indomethacin, ketoprofen and ibuprofen and 6-substituted 2-formyl and 2-acylphenyl esters of aspirin

Abordo, Evelyn A.,Bowden, Keith,Huntington, Anthony P.,Powell, Sarah L.

, p. 95 - 101 (1998)

The synthesis and study of a novel series of potential prodrugs of indomethacin, ketoprofen, ibuprofen and aspirin are reported. 2-Formylphenyl esters of the NSAIDs, together with two 6-substituted 2-formyl and two 2-acylphenyl aspirins and 4-formylphenyl indomethacin, have been prepared. A study of their alkaline and neutral hydrolysis shows that these compounds, with the exception of 2-acetylphenyl aspirin, act as true prodrugs of the NSAIDs, giving the NSAID and acylphenol. The rates of hydrolysis and activation parameters indicate that the 2-acylphenyl esters employ an intramolecular catalytic route. The 2-formylphenyl esters were more potent as anti-inflammatory agents than the parent compounds in the carragheenan-induced paw oedema test.

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