13011-56-8 Usage
Chemical compound
2,7-Naphthalenedisulfonic acid, 4-[[4-[(4-amino-1-naphthalenyl) azo]-1-naphthalenyl]azo]-, disodium salt
Commonly used as
dye and pigment
Structure
complex azo compound with two naphthalene groups linked by a sulfonic acid bridge
Color
bright red
Uses
textile, paper, and food industries as a colorant; pH indicator in analytical chemistry; fluorescent probe in scientific research; potential applications in photodynamic therapy for cancer treatment.
Check Digit Verification of cas no
The CAS Registry Mumber 13011-56-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,0,1 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 13011-56:
(7*1)+(6*3)+(5*0)+(4*1)+(3*1)+(2*5)+(1*6)=48
48 % 10 = 8
So 13011-56-8 is a valid CAS Registry Number.
InChI:InChI=1/C30H21N5O6S2.2Na/c31-26-11-12-27(23-6-2-1-5-22(23)26)32-33-28-13-14-29(25-8-4-3-7-24(25)28)34-35-30-17-20(43(39,40)41)16-18-15-19(42(36,37)38)9-10-21(18)30;;/h1-17H,31H2,(H,36,37,38)(H,39,40,41);;/q;2*+1/p-2/b33-32+,35-34+;;