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261174-49-6

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261174-49-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 261174-49-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,1,1,7 and 4 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 261174-49:
(8*2)+(7*6)+(6*1)+(5*1)+(4*7)+(3*4)+(2*4)+(1*9)=126
126 % 10 = 6
So 261174-49-6 is a valid CAS Registry Number.

261174-49-6Relevant articles and documents

Activity-guided isolation of an antiandrogenic compound of Pygeum africanum

Schleich, Sonja,Papaioannou, Maria,Baniahmad, Aria,Matusch, Rudolf

, p. 547 - 551 (2006)

Inactivation of the androgen receptor (AR) through androgen ablation and treatment with antiandrogens is a major goal in the therapy for prostate hyperplasia and prostate cancer. Bioactivity-directed fractionation of a selective dichloromethane extract from the stem bark of Pygeum africanum led to the isolation of the antiandrogenic compound atraric acid. Its activity was examined by an androgen receptor responsive reporter gene assay. For lead structure optimization we transformed the natural occurring compound atraric acid into its ethyl, n-propyl and n-butyl esters and their antiandrogenic activities were examined as well. In addition, benzoic acid was isolated. The structures of all compounds were determined and characterized by means of 1H- and 13C-NMR, HR-EI-mass, IR and UV spectroscopy. Georg Thieme Verlag KG Stuttgart.

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