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87840-51-5

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87840-51-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87840-51-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,8,4 and 0 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 87840-51:
(7*8)+(6*7)+(5*8)+(4*4)+(3*0)+(2*5)+(1*1)=165
165 % 10 = 5
So 87840-51-5 is a valid CAS Registry Number.

87840-51-5Downstream Products

87840-51-5Relevant articles and documents

Carbon-13 Chemical Shift Assignments of Derivatives of Benzoic Acid

Wnuk, Stanislaw,Wyrzykiewicz, Elzbieta,Kaczmarek, Elzbieta,Kinastowski, Stefan

, p. 271 - 275 (2007/10/02)

The 13C NMR spectra of 23 di- and tri-substituted derivatives of esters, thioesters and amides of benzoic acids have been calculated and fully assigned.The Ai empirical parameters of the (alkoxy)(dialkoxycarbonyl)methylamino, (alkoxy)(alkoxycarbonyl)(cyano)methylamino, (alkylamino)(dialkoxycarbonyl)methylamino and (alkylthio)(dialkoxycarbonyl)methylamino groups have been calculated for use in the prediction of the chemical shifts of substituted benzenes.

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