99103-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99103-20-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,1,0 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 99103-20:
(7*9)+(6*9)+(5*1)+(4*0)+(3*3)+(2*2)+(1*0)=135
135 % 10 = 5
So 99103-20-5 is a valid CAS Registry Number.
InChI:InChI=1/C50H85O4P/c1-41(2)21-12-22-42(3)23-13-24-43(4)25-14-26-44(5)27-15-28-45(6)29-16-30-46(7)31-17-32-47(8)33-18-34-48(9)35-19-36-49(10)37-20-38-50(11)39-40-54-55(51,52)53/h21,23,25,27,29,31,33,35,37,50H,12-20,22,24,26,28,30,32,34,36,38-40H2,1-11H3,(H2,51,52,53)/b42-23+,43-25+,44-27+,45-29+,46-31+,47-33+,48-35-,49-37+