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204577-97-9

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204577-97-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 204577-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,5,7 and 7 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 204577-97:
(8*2)+(7*0)+(6*4)+(5*5)+(4*7)+(3*7)+(2*9)+(1*7)=139
139 % 10 = 9
So 204577-97-9 is a valid CAS Registry Number.

204577-97-9Downstream Products

204577-97-9Relevant articles and documents

Substituted thiopyridines

-

, (2008/06/13)

Substituted thiopyridines of the general formula I where n is 1 or 2; R1is chlorine, C1-C3-fluoroalkyl, nitro or methylsulfonyl; R2is a C1-C10-alkyl, C2-C10-alkenyl or C2-C10-alkynyl radical, in each case unsubstituted or substituted by halogen, C1-C4-alkoxy, C1-C4-alkoxycarbonyl, di-(C1-C4-alkylamino) carbonyl, cyano or nitro, a C3-C8-cycloalkyl radical, or a C1-C4-alkylenephenyl, phenyl or naphthyl radical which is unsubstituted or substituted in the phenyl moiety by halogen, C1-C3-alkyl, C1-C3-alkoxy, trifluoromethyl, cyano or nitro.

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