> A wide variety of substituted naphthalenes are readily prepared regioselectively under mild reaction conditions by the 6-endo-dig electrophilic cyclization of appropriate arene-containing propargylic alcohols by ICl, I2, Br2, NBS, and PhSeBr. Lab Invest. The major pharmaceutical products based on 2-naphthol are the antifungal tolnaftate, produced by reaction with thiophosgene and N-methyl-m-toluidine; the semisynthetic penicillin nafcillin, produced via 2-ethoxynaphthalene; and the anti-inflammatory naproxen, produced via 2-methoxynaphthalene. The peak area of 2-naphthol obtained upon 1, 5, 10 times of reuse was 42.99, 43.31 and 43.39 mAU s, respectively. Propriétés chimiques. This substance is not classified as dangerous according to Directive 67/548/EEC. A new diastereoselective synthesis of α‐aminophosphonates has been developed, based on the reaction, in the presence of trifluoroacetic acid, of trialkyl phosphites with chiral imines derived from (R)‐ or (S)‐1‐(α‐aminobenzyl)‐2‐naphthol.The reaction proceeds at room temperature in toluene with high diastereoselectivity. Epigenetically induced changes in nuclear textural patterns and gelatinase expression in human fibrosarcoma cells. Tetrahedron Letters,Vol.30,No.50,pp 6997—7000,1989 0040-4039/89 $3.00 ÷ .00 Printed in Great Britain Pergamon Press pic VERSATILE PRECURSORS FOR THE SYNTHESIS OF ENYNES AND ENEDIYNES Andrew G. Myers,t Mian M. Alauddin, Mary Ann M. Fuhry, Peter S. Dragovich, Nathaniel S. Finney and Philip M. Harrington Contribution No. -, Z Wiss Mikrosk. Isolated mucosa were pre-equilibrated with (35)S- sulfate (5 x 10+6 cpm/umol, 1 mM) for 30 min and subsequently incubated for 15 min with 50 mM 1-naphthol. x��[s�����)�8S��F��DȦ �%`$���x�����>}~�sN�2�6���}��o����������ov]ѵy����2�&��?����/���w���j����ۺ.�6����t��f���g 4�x�]����y�������^�c�������|��u^����u��W�����ɗL櫳|����5qf�N�����U�D�Ll��h�3�_m��ٿ�ck��bߖ�)��$�`nY�Y���]g�FVxʦ+��i7u��綕�����)w����u�f�����W?����9J�.3���/1I�Ưl�j��rk+�5K|h8|v+7�ʑ�����15a�V7F��:�7 ۂqwe���X�l".J�Ւ�M[�6M�7ݮ�]���X7�8Ŋ_�K3��{�3m #S��-��q��?;�)�! Lookchem Provide Cas No.846-70-8 Basic information: Properties,Safety Data,Sds and Other Datebase. 1. Histochemistry. Histochemical determination of histone and non-histone protein content in rat liver nuclei. Naphthol Yellow S, also known as Acid Yellow 1 or Food Yellow 1, is a dye and a general protein stain. The effect of formaldehyde induced shrinkage on nuclear Naphthol Yellow S binding. 1272/2008. Diurnal variations in endogenous RNA polymerase activity and amounts of nuclear non-histone protein, DNA and cytoplasmic protein in rat liver. 1981;73(2):211-23. doi: 10.1007/BF00493021. Sudan I (also commonly known as CI Solvent Yellow 14 and Solvent Orange R), is an organic compound, typically classified as an azo dye. https://pubchem.ncbi.nlm.nih.gov/compound/Naphthol-Yellow-S Empirical Formula (Hill Notation): C 10 H 4 N 2 Na 2 O 8 S. Molecular Weight: In one method, naphthalene is nitrated to give 1-nitronaphthalene, which is hydrogenated to the amine followed by hydrolysis: C 10 H 8 + HNO 3 → C 10 H 7 NO 2 + H 2 O. Please enable it to take advantage of the complete set of features! MFCD00003958. %��������� By exposing liver cells to NFS for 10 to 120 seconds before fixation in MAF, increasing nuclear shrinkage can be induced with increasing pretreatment in NFS. Fixation in MAF offers the same advantages as NFS fixation as regards the small loss of proteins during the Feulgen staining procedure and the excellent reproducibility of the F-NYS staining.  |  Naphthol Yellow S. MDL. Cell Prolif. [Staining with naphthol yellow S. 2. C 1 0 H 4 N 2 Na 2 O 8 S. Poids moleculaire. Study of the reversibility of the protein-dye binding reaction]. Similarly, the photocatalytic performance of Co-titanate nanotubes towards degradation of phenol, naphthol yellow S and brilliant green were well documented . [Article in Italian] Bignone FA, Carlo P, Martelli A, Viviani R. In the present work we studied the reversibility of the binding reaction of Naphthol Yellow S to proteins using a … The (S)-N-(1-phenyleth-1-yl)-N-(2-propen-1-yl)amine hydrobromide 2 obtained in an 80% yield from (S)-1-phenylethylamine and 3-bromo-1-propene is treated in CHC1 3 at room temperature with two equivalents of I 2 adsorbed on Amberlyst A 26 in the C O 3 2 − form to afford in a good yield a 1:1 diastereomeric mixture of (1′S*,5S,R)-3-(1′-phenyleth-1′-yl)-5-(iodomethyl)oxaxolidin-2-ones (4a, b). Naphthol may refer to: 1-Naphthol; 2-Naphthol; This set index page lists chemical compounds articles associated with the same name. -, Acta Cytol. NIH Synonym: 2,4-Dinitro-1-naphthol-7-sulfonic acid sodium salt, 5,7-Dinitro-8-hydroxy-2-naphthalenesulfonic acid sodium salt, Acid Yellow 1, Flavianic acid sodium salt Empirical Formula (Hill Notation): C 10 H 4 N 2 Na 2 O 8 S 1973 Jan-Feb;17(1):15-8 1969 Aug;42(2):444-51 If an internal link led you here, you may wish to change the link to point directly to the intended article. 3.4. 1. Molecular Weight 358.19 . *���ρ���\� ��Lay��U[t���?5���^GpuD{�/��K�4�Ej�F���Ʊ/4uU잋�@2�A��.2ȉ��\ �0�W/�s����cO���f+r�I��>��c���LR�xȾm�����n"���Ƅ���ίsC^��u~�`�]���7̬�;����cn�&����5���G��:/��\:�튲#z�x'� ����3�l_2hf��t�+G����Y�M=s�!�ߎN`�$�N�2����������E��I0���Y��%�K@ĭ�V�#�OHm 6���` tA� �,�.|2����AV�e�� L�_�|zK����a�lvħSPgN�5E-�ʢ�׏:�w�fɩv{rpmx�j�;��e3�S}7�7XT�!�m,�c��Og>��:'�`S&G����4S+����P�;!��Z��:��z@�s#ғ�|6�;��C����^��6\Md��.��R��s�,VC��N�_uR��l�HʸX&E��D�l!�ǔ~h3�e��3^(=��E�s�̽�&f�3l����1�Mّ�ۦ�k�(����U^�e�K�~�f�`=n�TM�Ih��KF� Naphthol Yellow S analytical standard Synonym: 2,4-Dinitro-1-naphthol-7-sulfonic acid sodium salt, 5,7-Dinitro-8-hydroxy-2-naphthalenesulfonic acid sodium salt, Acid Yellow 1, Flavianic acid sodium salt CAS Number 846-70-8. The good reusability indicated that the adsorbent was stable and had good application prospect in future. At one time it was a popular food colorant but it was delisted in 1959 in the U.S. Quantification of nuclear non-histone proteins by Feulgen--Naphthol Yellow S cytophotometry. Determination of total protein values in thymocyte and hepatocyte nuclei. 2-Naphthol, or β-naphthol, is a fluorescent colorless (or occasionally yellow) crystalline solid with the formula C 10 H 7 OH. Mitchell JP, Van der Ploeg M, van Duijn P. Histochemistry. 1976 Oct 22;49(2):113-21. doi: 10.1007/BF00495675. The free sulfonic acid can be recrystallised from dilute HCl (m 150o) or AcOH/EtOAc (m 148-149.5o). 1955 May;62(5):323-6 Histochemistry. Naphthol Yellow S. Synonyms: 2,4-Dinitro-1-naphthol-7-sulfonic Acid Disodium Salt Disodium 2,4-Dinitro-1-naphthol-7-sulfonate Disodium 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonate 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonic Acid Disodium Salt Flavianic Acid Disodium Salt. Gaub J. 3. Iwatsuru M, Nishigori H, Maruyama K. The characteristics of the binding site in the first binding class of naphthol yellow-S (NY-S) on bovine serum albumin (BSA) were studied. CAS Number: 846-70-8. Would you like email updates of new search results? Lookchem Provide Cas No.846-70-8 Basic information: Properties, Safety Data, Sds and Datebase. Homochiral dimer ( e.g 68 ( 1 ):49-53. doi: 10.1136/gut.21.5.423 der Ploeg M, Van P.! You May wish to change the link to point directly to the intended article reactive.Both. 4 N 2 Na 2 O 8 S ):185-95. doi: 10.1007/BF00493432 reusability that. By the location of naphthol yellow-S binding site on bovine serum albumin ; 13 ( 5 ):423-7. doi 10.1007/BF00495675... S. Poids moleculaire Z Wiss Mikrosk 1953 Jun 5 ; 117 ( 3049 ):627-8 - expression... In a hot water bath ) 2- ( R, S ) -Y ( )... Stable and had good application prospect in future ):323-6 -, Wiss... To the intended article yields by the cyclization of analogous 1-aryl-3-alkyn-2-ones complete set of features with N. 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