81652-42-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81652-42-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,5 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81652-42:
(7*8)+(6*1)+(5*6)+(4*5)+(3*2)+(2*4)+(1*2)=128
128 % 10 = 8
So 81652-42-8 is a valid CAS Registry Number.
InChI:InChI=1/C16H18NO5/c1-21-16(19)14-12-8-7-11(17(12)20)9-13(14)22-15(18)10-5-3-2-4-6-10/h2-6,11-14H,7-9H2,1H3/t11?,12-,13?,14?/m1/s1