19542-38-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19542-38-2 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, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 19542-38:
(7*1)+(6*9)+(5*5)+(4*4)+(3*2)+(2*3)+(1*8)=122
122 % 10 = 2
So 19542-38-2 is a valid CAS Registry Number.
InChI:InChI=1/C34H40N4O4/c1-5-23(2)29-33(40)35-21-20-24-16-18-27(19-17-24)42-31(26-14-10-7-11-15-26)30(34(41)36-29)37-32(39)28(38(3)4)22-25-12-8-6-9-13-25/h6-21,23,28-31H,5,22H2,1-4H3,(H,35,40)(H,36,41)(H,37,39)/b21-20-/t23-,28-,29-,30-,31+/m0/s1