134439-71-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134439-71-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,4,3 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 134439-71:
(8*1)+(7*3)+(6*4)+(5*4)+(4*3)+(3*9)+(2*7)+(1*1)=127
127 % 10 = 7
So 134439-71-7 is a valid CAS Registry Number.
InChI:InChI=1/C15H18O5/c1-12(2)4-10-14(20,6-12)3-9(5-16)13(8-17)7-15(10,13)11(18)19/h3,5,8,10,20H,4,6-7H2,1-2H3,(H,18,19)/t10-,13+,14-,15+/m0/s1