157878-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157878-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,8,7 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 157878-99:
(8*1)+(7*5)+(6*7)+(5*8)+(4*7)+(3*8)+(2*9)+(1*9)=204
204 % 10 = 4
So 157878-99-4 is a valid CAS Registry Number.
InChI:InChI=1/C33H45N7O7/c1-20(2)16-27(33(47)40-30(44)25(36)14-15-34)38-32(46)28(18-21-6-4-3-5-7-21)39-31(45)26(12-13-29(42)43)37-19-23(35)17-22-8-10-24(41)11-9-22/h3-11,16,19,25-28,37,41H,12-15,17-18,34-36H2,1-2H3,(H,38,46)(H,39,45)(H,42,43)(H,40,44,47)/b23-19+/t25?,26-,27+,28+/m1/s1