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71556-78-0

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71556-78-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71556-78-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,5,5 and 6 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 71556-78:
(7*7)+(6*1)+(5*5)+(4*5)+(3*6)+(2*7)+(1*8)=140
140 % 10 = 0
So 71556-78-0 is a valid CAS Registry Number.

71556-78-0Relevant articles and documents

Hexahydroazepine, piperidine and pyrrolidine derivatives

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, (2008/06/13)

The invention concerns novel 2-oxo-hexahydroazepine, -piperidine and -pyrrolidine derivatives of formula (I) and their aromatized derivatives of formula (II) STR1 where n is 2, 3 or 4, R is hydrogen, lower alkyl or aryl(lower)alkyl, R2 is hydrogen, lower alkyl or aryl(lower)alkyl and R3 is hydrogen, lower alkyl, aryl(lower)alkyl, lower alkenyl or lower alkynyl. The compounds are useful as intermediates for preparing 3,3-disubstituted -hexahydroazepine, -piperidine and -pyrrolidine compounds having pharmacological activity, particularly analgesic activity.

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