The CAS Registry Mumber 5821-64-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,8,2 and 1 respectively; the second part has 2 digits, 6 and 4 respectively. Calculate Digit Verification of CAS Registry Number 5821-64: (6*5)+(5*8)+(4*2)+(3*1)+(2*6)+(1*4)=97 97 % 10 = 7 So 5821-64-7 is a valid CAS Registry Number.
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Get Best Price for5821-64-717-(4-acetylphenyl)-1,8-dimethyl-17-azapentacyclo[6.6.5.0~2,7~.0~9,14~.0~15,19~]nonadeca-2,4,6,9,11,13-hexaene-16,18-dione (non-preferred name)