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888731-91-7

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888731-91-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 888731-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,8,7,3 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 888731-91:
(8*8)+(7*8)+(6*8)+(5*7)+(4*3)+(3*1)+(2*9)+(1*1)=237
237 % 10 = 7
So 888731-91-7 is a valid CAS Registry Number.

888731-91-7Relevant articles and documents

Production Method of Nitrogen-Containing Fused Ring Compounds

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, (2010/11/30)

[Problems] The present invention provides a superior production method and a superior purification method of compounds effective for the treatment or prophylaxis of pathology showing involvement of uric acid, such as hyperuricemia, gouty tophus, acute gouty arthritis, chronic gouty arthritis, gouty kidney, urolithiasis, renal function disorder, coronary artery disease, ischemic heart disease and the like. [Means] A compound represented by the following formula [2] or a pharmaceutically acceptable salt thereof can be produced by reacting a compound represented by the following formula [3] or a salt thereof with a compound represented by the following formula [4], a salt thereof or a reactive derivative thereof. Moreover, crystallization of a compound represented by the formula [2] can be performed with industrially superior workability, and high quality crystals of a compound represented by the formula [2] can be obtained. wherein each symbol is as defined in the description.

Nitrogen-containing fused ring compounds and use thereof

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Page/Page column 104, (2010/11/25)

A URAT1 activity inhibitor containing a nitrogen-containing fused ring compound represented by the following formula [1]: wherein each symbol is as defined in the description. The present invention is useful for the prophylaxis or treatment of pathology showing involvement of uric acid, such as hyperuricemia, gouty tophus, acute gouty arthritis, chronic gouty arthritis, gouty kidney, urolithiasis, renal function disorder, coronary artery disease, ischemic heart disease and the like.

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