In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Development and validation of a method for ionic dyes determination in guava fibrous matrix using reverse phase chromatography, published in 2021, which mentions a compound: 25956-17-6, Name is Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate, Molecular C18H14N2Na2O8S2, Related Products of 25956-17-6.
In this work, a method for food dyes determination in fibrous fruit pulps was developed. The analytes Tartrazine, Twilight Yellow FCF, Erythrosine, Orange G and Allura Red were analyzed by reverse phase chromatog. with diode array (DAD) detection. The sample preparation consisted of a simple procedure, based on initial pH adjustment of the sample (pH = 10.0), followed by an extraction with acetonitrile (5.0 mL and agitation for 30 s), ultrasonic (5 min) and centrifugation (4000 rpm, 20°C, for 20 min). The supernatant had its pH adjusted to 3.0, followed by filtration. The method was validated, with the anal. curves prepared in a matrix, in the range of 50 to 150 mg kg-1 for all the analytes studied (determination coefficients (R2) > 0.99). The method veracity was evaluated in terms of recovery, obtaining recoveries of 93-110%. The repeatability was less than 13.7%, while the intermediate precision was less than 19.0%. The limits of detection and quantification were determined, being 15 and 30 mg kg-1, resp. The combined relative uncertainties were less than 13.8%. Therefore, it can be concluded that a simple method was developed, suitable for monitoring the presence of dyes in fruit pulps in routine analyzes.
Different reactions of this compound(Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate)Related Products of 25956-17-6 require different conditions, so the reaction conditions are very important.
Reference:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics