521-80-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 521-80-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,2 and 1 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 521-80:
(5*5)+(4*2)+(3*1)+(2*8)+(1*0)=52
52 % 10 = 2
So 521-80-2 is a valid CAS Registry Number.
InChI:InChI=1/C20H23N/c1-21(2)15-7-12-20-18-10-5-3-8-16(18)13-14-17-9-4-6-11-19(17)20/h3-6,8-11,13-14,20H,7,12,15H2,1-2H3
521-80-2Relevant articles and documents
Process for dibenzocycloheptene compounds
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, (2008/06/13)
This invention relates to a process for the preparation of 5H-dibenzo[a,d]cycloheptene compounds and derivatives having aminoalkyl substituents at the 5-position by reducing the corresponding 5-aminoalkyl-5-hydroxy compounds with an alkali metal borohydride in trifluoroacetic acid.