128503-37-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128503-37-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,5,0 and 3 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128503-37:
(8*1)+(7*2)+(6*8)+(5*5)+(4*0)+(3*3)+(2*3)+(1*7)=117
117 % 10 = 7
So 128503-37-7 is a valid CAS Registry Number.
InChI:InChI=1/C32H32O9/c1-2-3-13-20-37-32-28(41-31(36)24-18-11-6-12-19-24)27(40-30(35)23-16-9-5-10-17-23)26(25(21-33)38-32)39-29(34)22-14-7-4-8-15-22/h2,4-12,14-19,25-28,32-33H,1,3,13,20-21H2/t25-,26-,27+,28+,32u/m1/s1