15,6,94,5-tetramethoxy-2,10-dioxa-6,14-diaza-1,9(1,3),3,11(1,4)-tetrabenzena-cyclohexadecaphane-5,13-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 10438-13-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,4,3 and 8 respectively; the second part has 2 digits, 1 and 3 respectively. Calculate Digit Verification of CAS Registry Number 10438-13: (7*1)+(6*0)+(5*4)+(4*3)+(3*8)+(2*1)+(1*3)=68 68 % 10 = 8 So 10438-13-8 is a valid CAS Registry Number.