81517-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81517-91-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,1 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81517-91:
(7*8)+(6*1)+(5*5)+(4*1)+(3*7)+(2*9)+(1*1)=131
131 % 10 = 1
So 81517-91-1 is a valid CAS Registry Number.
InChI:InChI=1/C15H23N3O7S.Na/c1-25-15(17-10(20)4-2-3-9(16)12(21)22)7-18-11(13(23)24)8(5-19)6-26-14(15)18;/h9,14,19H,2-7,16H2,1H3,(H,17,20)(H,21,22)(H,23,24);/q;+1/p-1/t9?,14-,15-;/m1./s1