81918-99-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81918-99-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,1 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81918-99:
(7*8)+(6*1)+(5*9)+(4*1)+(3*8)+(2*9)+(1*9)=162
162 % 10 = 2
So 81918-99-2 is a valid CAS Registry Number.
InChI:InChI=1/C21H36N7O16P3S2/c1-21(2,16(31)19(32)24-4-3-12(29)23-5-6-49-48)8-41-47(38,39)44-46(36,37)40-7-11-15(43-45(33,34)35)14(30)20(42-11)28-10-27-13-17(22)25-9-26-18(13)28/h9-11,14-16,20,30-31,48H,3-8H2,1-2H3,(H,23,29)(H,24,32)(H,36,37)(H,38,39)(H2,22,25,26)(H2,33,34,35)/t11-,14-,15-,16+,20-/m1/s1