6416-67-7 Usage
Preparation
5-Amino-2-(phenylamino)benzenesulfonic acid diazo, Coupled with resorcinol, and then and diazo 4-Aminobenzenesulfonic acid coupling.
Check Digit Verification of cas no
The CAS Registry Mumber 6416-67-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,1 and 6 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 6416-67:
(6*6)+(5*4)+(4*1)+(3*6)+(2*6)+(1*7)=97
97 % 10 = 7
So 6416-67-7 is a valid CAS Registry Number.
InChI:InChI=1/C24H19N5O8S2.2Na/c30-21-13-12-20(24(31)23(21)29-26-16-6-9-18(10-7-16)38(32,33)34)28-27-17-8-11-19(22(14-17)39(35,36)37)25-15-4-2-1-3-5-15;;/h1-14,25-27H,(H,32,33,34)(H,35,36,37);;/q;2*+1/p-2/b28-20+,29-23-;;