Orthanilic acid (2-aminobenzenesulfonic acid, (S)Ant), an aromatic β-amino acid, has been shown to be highly useful in inducing a folded conformation in peptides. When incorporated into peptide sequences (Xaa-(S)Ant-Yaa), this rigid aromatic β-amino acid strongly imparts a reverse-turn conformation to the peptide backbone, featuring robust 11-membered-ring hydrogen-bonding.

A method of labeling ra t ascites tumor cells with diazotized sulfanilic-S 35 acid is described. The distr ibution of radioact ivi ty in host ra ts with labeled subcutaneous or ascites tumor implants was studied; radioact ivi ty was found to be present mainly in the tumor, kidneys, spleen, liver, and blood, decreasing in specific act iv i ty in tha t order. In general, the tissue localization o...

A method of labeling ra t ascites tumor cells with diazotized sulfanilic-S 35 acid is described. The distr ibution of radioact ivi ty in host ra ts with labeled subcutaneous or ascites tumor implants was studied; radioact ivi ty was found to be present mainly in the tumor, kidneys, spleen, liver, and blood, decreasing in specific act iv i ty in tha t order. In general, the tissue localization o...

Rabbits primarily stimulated with a BSA (bovine serum albumin)-sulfanilic acid complex will produce a good secondary response to the sulfanilic acid hapten if the carrier used in the secondary stimulus is again BSA, and not if the secondary carrier is HGG (human gamma globulin). In the latter situation, a good secondary response is obtained, however, if the rabbits are pretreated a few weeks ea...

It has been generally assumed since the work of Pauly (6) and of Inouye (5) that the reactivity of proteins with diazo compounds is due to the imidazole group of hiitidine and the phenyl group of tyrosine. There are, however, several indications that these are not the only groups concerned in the reaction. Thus, Hooker and Boyd (4) found that casein coupled with diazoarsanilic acid contained ap...

It has been generally assumed since the work of Pauly (6) and of Inouye (5) that the reactivity of proteins with diazo compounds is due to the imidazole group of hiitidine and the phenyl group of tyrosine. There are, however, several indications that these are not the only groups concerned in the reaction. Thus, Hooker and Boyd (4) found that casein coupled with diazoarsanilic acid contained ap...

Sulfanilamide wastewater which is come from the dyestuff plant characterized by a high content of hardly biodegradable dissolved，high acidity，and organic matter. The plant`s has become water pollution world's attention. Therefore, efficient removal sulfanilic acid and hydrochloric before drainage great importance. This paper designed new process engineering containing recovery acid, at same tim...

A sulfonated graphene catalyst was designed and tested in the acetylation of glycerol. The synthesized using graphite as starting material comprised three stages, which included: (i) synthesis oxide by means a modified Hummers method, (ii) reduction with ascorbic acid, (iii) functionalization sulfanilic acid situ diazotization. Structural, morphological chemical properties were characterized SE...

The asymmetric unit of the title compound, C(12)H(14)N(4)·2C(6)H(7)NO(3)S·2H(2)O, contains one half of a centrosymmetric 1,4-bis-(4,5-dihydro-1H-imidazol-2-yl)benzene (bib) molecule, one 4-amino-benzene-sulfonic acid molecule and one water mol-ecule. In the bib molecule, the imidazole ring adopts an envelope conformation. The benzene rings of bib and 4-aminobenzenesulfonic acid are oriented at ...