7481-49-4 Usage
Definition
ChEBI: A naphthalenesulfonic acid that is naphthalene-2,7-disulfonic acid carrying additional hydroxy and (2,4-dimethylphenyl)diazenyl substituents at positions 3 and 4 respectively. The disodium salt is the biological stain 'acid red 26'.
Check Digit Verification of cas no
The CAS Registry Mumber 7481-49-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,8 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 7481-49:
(6*7)+(5*4)+(4*8)+(3*1)+(2*4)+(1*9)=114
114 % 10 = 4
So 7481-49-4 is a valid CAS Registry Number.
InChI:InChI=1/C18H16N2O7S2/c1-10-3-6-15(11(2)7-10)19-20-17-14-5-4-13(28(22,23)24)8-12(14)9-16(18(17)21)29(25,26)27/h3-9,21H,1-2H3,(H,22,23,24)(H,25,26,27)/b20-19+