The CAS Registry Mumber 541501-11-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,1,5,0 and 1 respectively; the second part has 2 digits, 1 and 1 respectively. Calculate Digit Verification of CAS Registry Number 541501-11: (8*5)+(7*4)+(6*1)+(5*5)+(4*0)+(3*1)+(2*1)+(1*1)=105 105 % 10 = 5 So 541501-11-5 is a valid CAS Registry Number.
Get Best Price for541501-11-5[1'(2)R,2'R,4'aS,6'R,8'aS]-4,6'-dihydroxy-3',4',4'a,5',6',7',8',8'a-octahydro-2',5',5',8'a-tetramethylspiro[benzofuran-2(3H),1'(2'H)-naphthalene]-6-carboxylic acid methyl ester