The CAS Registry Mumber 78023-80-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,0,2 and 3 respectively; the second part has 2 digits, 8 and 0 respectively. Calculate Digit Verification of CAS Registry Number 78023-80: (7*7)+(6*8)+(5*0)+(4*2)+(3*3)+(2*8)+(1*0)=130 130 % 10 = 0 So 78023-80-0 is a valid CAS Registry Number.
Get Best Price for78023-80-08-Hydroxymethyl-9-methoxy-3,3,6,11-tetramethyl-12-oxo-1H,12H-2,4,7,13-tetraoxa-benzo[4,5]cyclohepta[1,2-a]naphthalene-5-carboxylic acid methyl ester