1,9,10-trimethoxy-5-methyl-1,3,4,5,6,7-hexahydro-2,5-benzoxaxonine is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 75221-13-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,2,2 and 1 respectively; the second part has 2 digits, 1 and 3 respectively. Calculate Digit Verification of CAS Registry Number 75221-13: (7*7)+(6*5)+(5*2)+(4*2)+(3*1)+(2*1)+(1*3)=105 105 % 10 = 5 So 75221-13-5 is a valid CAS Registry Number.