19542-40-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19542-40-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,4 and 2 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19542-40:
(7*1)+(6*9)+(5*5)+(4*4)+(3*2)+(2*4)+(1*0)=116
116 % 10 = 6
So 19542-40-6 is a valid CAS Registry Number.
InChI:InChI=1/C42H45N5O5/c1-46(2)36(28-31-15-8-4-9-16-31)41(50)45-40(49)35-19-12-26-47(35)37-38(32-17-10-5-11-18-32)52-33-22-20-29(21-23-33)24-25-43-39(48)34(44-42(37)51)27-30-13-6-3-7-14-30/h3-11,13-18,20-25,34-38H,12,19,26-28H2,1-2H3,(H,43,48)(H,44,51)(H,45,49,50)/b25-24-/t34-,35-,36-,37-,38+/m0/s1