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57228-57-6

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57228-57-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57228-57-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,2 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57228-57:
(7*5)+(6*7)+(5*2)+(4*2)+(3*8)+(2*5)+(1*7)=136
136 % 10 = 6
So 57228-57-6 is a valid CAS Registry Number.

57228-57-6Relevant articles and documents

O-Tertiary amino-alkyl-N-benzoyl tyrosil amides

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, (2008/06/13)

Tyrosine derivatives of the formula: STR1 wherein: R1 is a linear or branched-chain alkyl group having 1-6 carbon atoms, terminating by a tertiary amino group; R 2 is an unsubstituted, monosubstituted or di-substituted phenyl or benzyloxy group, the substituent being --Cl, --Br, --NO2, --OCH3, --CH3 or --CF3 ; R3 is a primary, secondary or tertiary amino group or an aryl-alkylamino group having 7-9 carbon atoms; and salts of said tyrosine derivatives with pharmaceutically acceptable acids.

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