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251549-57-2

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251549-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 251549-57-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,5,4 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 251549-57:
(8*2)+(7*5)+(6*1)+(5*5)+(4*4)+(3*9)+(2*5)+(1*7)=142
142 % 10 = 2
So 251549-57-2 is a valid CAS Registry Number.

251549-57-2Upstream product

251549-57-2Relevant articles and documents

Heterocyclic indole derivatives and mono- or diazaindole derivatives

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Page column 28, (2008/06/13)

There is provided a compound represented by the general formula (1): wherein Het represents an optionally substituted heterocyclic group; A1and A2each independently represent —CH═, etc.; A3represents —CH2—, etc.; R1represents a 4-fluorophenyl group, etc.; R2represents an alkyl group; n represents 0, 1 or 2, provided that when A1and A2both are —CH═, A3represents —CH2— or —SO2—, which is an indole derivative or a mono- or diazaindole derivative that has COX-2 inhibitory activity and is useful as a pharmaceutical, such as an anti-inflammatory agent, or addition salts thereof with a pharmaceutically acceptable acid or base, or hydrates thereof.

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