13303-91-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13303-91-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,3,0 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 13303-91:
(7*1)+(6*3)+(5*3)+(4*0)+(3*3)+(2*9)+(1*1)=68
68 % 10 = 8
So 13303-91-8 is a valid CAS Registry Number.
InChI:InChI=1/C22H24N2O9.Ca.2H/c1-21(32)7-5-4-6-8(25)9(7)15(26)10-12(21)17(28)13-14(24(2)3)16(27)11(20(23)31)19(30)22(13,33)18(10)29;;;/h4-6,12-14,17,25,27-29,32-33H,1-3H3,(H2,23,31);;;/t12-,13-,14+,17+,21-,22+;;;/m1.../s1