90991-75-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90991-75-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,9,9 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 90991-75:
(7*9)+(6*0)+(5*9)+(4*9)+(3*1)+(2*7)+(1*5)=166
166 % 10 = 6
So 90991-75-6 is a valid CAS Registry Number.
InChI:InChI=1/C31H34N4O7/c1-19(32-26(31(41)42)18-22-11-7-4-8-12-22)27(36)33-20(2)28(37)35-29(38)25(17-21-9-5-3-6-10-21)34-24-15-13-23(14-16-24)30(39)40/h3-16,19-20,25-26,32,34H,17-18H2,1-2H3,(H,33,36)(H,39,40)(H,41,42)(H,35,37,38)/t19-,20-,25-,26?/m0/s1