15545-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 15545-21-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,5,4 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 15545-21:
(7*1)+(6*5)+(5*5)+(4*4)+(3*5)+(2*2)+(1*1)=98
98 % 10 = 8
So 15545-21-8 is a valid CAS Registry Number.
InChI:InChI=1/C33H40N8O7/c1-19(43)37-23(14-20-9-6-5-7-10-20)31(45)38-24(15-21-11-8-12-22(13-21)47-4)32(46)39-26-25(16-42)48-33(28(26)44)41-18-36-27-29(40(2)3)34-17-35-30(27)41/h5-13,17-18,23-26,28,33,42,44H,14-16H2,1-4H3,(H,37,43)(H,38,45)(H,39,46)/t23?,24?,25-,26-,28-,33-/m1/s1