129-90-8 Usage
Uses
Used in Biochemical and Pharmaceutical Research:
8-p-toluidinonaphthalene-1-sulphonic acid is used as a fluorescent dye for fluorescence microscopy and flow cytometry, enabling the study of protein conformational changes and the binding and transport of solutes in biological membranes.
Used in the Food Industry:
8-p-toluidinonaphthalene-1-sulphonic acid is used as a detection agent for the identification of contaminants in food products, ensuring food safety and quality.
Used as a pH Probe:
8-TNS is employed as a pH-sensitive fluorescent indicator, allowing researchers to monitor changes in pH levels in various biological and chemical systems.
Used in the Study of Biological Membranes:
8-p-toluidinonaphthalene-1-sulphonic acid is utilized in the investigation of the binding and transport of solutes across biological membranes, providing insights into membrane dynamics and function.
Check Digit Verification of cas no
The CAS Registry Mumber 129-90-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,2 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 129-90:
(5*1)+(4*2)+(3*9)+(2*9)+(1*0)=58
58 % 10 = 8
So 129-90-8 is a valid CAS Registry Number.
InChI:InChI=1/C17H15NO3S/c1-12-8-10-14(11-9-12)18-15-6-2-4-13-5-3-7-16(17(13)15)22(19,20)21/h2-11,18H,1H3,(H,19,20,21)
129-90-8Relevant academic research and scientific papers
INTRAMOLECULAR DONOR-ACCEPTOR SYSTEMS. 10. MULTIPLE FLUORESCENCES FROM 8-(PHENYLAMINO)-1-NAPHTHALENESULFONATES.
Kosower,Kanety
, p. 6236 - 6243 (2007/10/02)
8-(phenylamino)-1-naphthalenesulfonates exhibit variations in fluorescence maxima and quantum yields with solvent polarity and substituent change. These facts suggest sequential formation of two excited states, a naphthalene-excited S//1//,//n//p state and a charge-transfer state, S//1//,//c//t, as in the case of the 6-(phenylamino)-2-naphthalenesulfonates. An inefficient photochemical dissociation of the sulfonate group to form 1-(phenylamino)naphthalene is reported. Previously reported excited-state kinetics are consistent with the two-step mechanism.
