91676-90-3 Usage
General Description
"1,3-Benzenediol, 4-((5-methyl-1,3,4-thiadiazol-2-yl)azo)-" is a chemical compound that is commonly used as a dye in various industries. It is an azo compound, which means it contains a nitrogen-nitrogen double bond. The presence of the 1,3-Benzenediol group in the compound gives it its characteristic properties, and the 5-methyl-1,3,4-thiadiazol-2-yl group provides the azo dye with its color. This chemical is often used in the production of colored textiles, inks, and other materials where a vibrant color is desired. Additionally, it may also have potential applications in biological and medical research due to its unique chemical structure. However, it is important to handle 1,3-Benzenediol, 4-((5-methyl-1,3,4-thiadiazol-2-yl)azo)- with care, as azo compounds can be hazardous if not properly managed.
Check Digit Verification of cas no
The CAS Registry Mumber 91676-90-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,7 and 6 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 91676-90:
(7*9)+(6*1)+(5*6)+(4*7)+(3*6)+(2*9)+(1*0)=163
163 % 10 = 3
So 91676-90-3 is a valid CAS Registry Number.
InChI:InChI=1/C9H8N4O2S/c1-5-10-12-9(16-5)13-11-7-3-2-6(14)4-8(7)15/h2-4,15H,1H3,(H,12,13)/b11-7+
91676-90-3Relevant academic research and scientific papers
5-METHYL-1,3,4-THIADIAZOLYLAZO-RESORCINOL AS A NEW METALLOCHROMIC INDICATOR FOR COMPLEXOMETRIC TITRATION OF LEAD
Cacho, Juan,Nerin, Cristina,Romero, Jose
, p. 1360 - 1366 (2007/10/02)
The synthesis, characteristics and analytical reactions of 5-methyl-1,3,4-thiadiazolylazo-resorcinol (MTDAR) are described.Their dissociation constants of OH groups in ortho and para position are respectively pK1 = 8.09 +/- 0.01 and pK2 = 5.72 +/- 0.02.For the Pb-MTDAR complex, the molar absorptivity is 2.0E4 l mol-1cm-1 at 525 nm and pH = 8.0.The complex of ML type is formed.Beer's law is obeyed between 0 and 9 ppm of Pb.The formation constant is 7.9E5.The studied reagent can be employed as a metallochromic indicator in chelometric titrations with visualand photometric indication.The interferences and their elimination are studied, too.The triestimul coordinates to chromatic transition are determined.This transition is increased by adding indigo carmine as an inert dyestuff.
