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637774-00-6

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637774-00-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 637774-00-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,7,7 and 4 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 637774-00:
(8*6)+(7*3)+(6*7)+(5*7)+(4*7)+(3*4)+(2*0)+(1*0)=186
186 % 10 = 6
So 637774-00-6 is a valid CAS Registry Number.

637774-00-6Downstream Products

637774-00-6Relevant articles and documents

PHOSPHODIESTERASE IV INHIBITOR CONTAINING PYRIDYLACRYLAMIDE DERIVATIVE

-

, (2008/06/13)

This invention relates to a phosphodiesterase IV inhibitor containing as an active ingredient a pyridylacrylamide derivative represented by the following formula (I): (wherein Ar1 represents substituted or unsubstituted pyridyl; Ar2 represents phenyl substituted by alkoxy, etc.; R1 represents hydrogen, alkyl, or aryl; R2 represents hydrogen, alkyl, cyano, or alkoxycarbonyl; R3 represents hydrogen or optionally substituted alkyl; X represents oxygen or sulfur; A and B are the same or different and each independently represents hydrogen, hydroxyl, alkoxy, or alkylthio, or A and B together represent oxo, thioxo, etc., or A may be hydroxyl and B may be 1-alkylimidazol-2-yl; and n is an integer from 1 to 3) or a pharmaceutically acceptable salt thereof.

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