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121582-47-6

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121582-47-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121582-47-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,5,8 and 2 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 121582-47:
(8*1)+(7*2)+(6*1)+(5*5)+(4*8)+(3*2)+(2*4)+(1*7)=106
106 % 10 = 6
So 121582-47-6 is a valid CAS Registry Number.

121582-47-6Relevant articles and documents

Pyridazinone compounds

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Page/Page column 66, (2010/08/08)

The present invention provides a compound which has the effect of PDE inhibition, and which is useful as a medicament for preventing or treating schizophrenia or so on. A compound of formula (I0): wherein R1 represents a substituent, R2 represents a hydrogen atom, or a substituent, R3 represents a hydrogen atom, or a substituent, Ring A represents an aromatic ring which can be substituted, and Ring B represents a 5-membered heteroaromatic ring which can be substituted, or a salt thereof.

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