171973-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171973-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,9,7 and 3 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 171973-67:
(8*1)+(7*7)+(6*1)+(5*9)+(4*7)+(3*3)+(2*6)+(1*7)=164
164 % 10 = 4
So 171973-67-4 is a valid CAS Registry Number.
InChI:InChI=1/C48H44N2O12/c1-29(51)49-41-43(61-44(53)31-17-7-3-8-18-31)42-40(28-58-46(62-42)32-19-9-4-10-20-32)60-47(41)57-26-38(45(54)56-27-39(52)30-15-5-2-6-16-30)50-48(55)59-25-37-35-23-13-11-21-33(35)34-22-12-14-24-36(34)37/h2-24,37-38,40-43,46-47H,25-28H2,1H3,(H,49,51)(H,50,55)/t38-,40?,41-,42-,43+,46?,47-/m0/s1