139953-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139953-21-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,9,5 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139953-21:
(8*1)+(7*3)+(6*9)+(5*9)+(4*5)+(3*3)+(2*2)+(1*1)=162
162 % 10 = 2
So 139953-21-2 is a valid CAS Registry Number.
InChI:InChI=1/C14H18O3/c1-8-3-4-10(9(2)14(16)17)5-11-6-12(15)7-13(8)11/h6,8,10,13H,2-5,7H2,1H3,(H,16,17)/t8-,10+,13+/m0/s1