染色剂和染料
CAS号：6226-79-5
品名：丽春红SPonceauS
中文别名：3-羟基-4-[2-磺酸基-4-(4-磺酸苯基偶氮)苯基偶氮]-2,7-萘二磺酸四钠盐;丽春红S;酸性红112;3-羟基-4-[2-磺酸基-4-(4-磺酸苯基偶氮)苯基偶氮]-2,7-萘二磺酸;
英文别名：ACIDRED112;ATXPONCEAUSRED;PonceauSExtra;c.i.acidred112;FASTPONCEAU2B;PonceauRedS;
分子式：C22H12N4Na4O13S4
分子量：760.569
精确质量：759.887
Psa：331.99
RTECS号：QJ6600000
UNII号：T1C2UGS05F
外观与性状：棕色粉末
密度：1.01g/mLat 20°C
折射率：n20/D 1.338
稳定性：Stable. Incompatible with strong oxidizing agents.
储存条件：Store at RT.
安全说明：S26-S36-S37/39
危险类别码：R36/37/38
WGK Germany：3
海关编码：32041200
危险品标志：Xi
简介：PonceauS,AcidRed112,orC.I.27195isasodiumsaltofadiazodyeofalightredcolor,thatmaybeusedtoprepareastainforrapidreversibledetectionofproteinbandsonnitrocelluloseorpolyvinylidenefluoride(PVDF)membranes(Westernblotting),aswellasoncelluloseacetatemembranes.APonceauSstainisusefulbecauseitdoesnotappeartohaveadeleteriouseffectonthesequencingofblottedpolypeptidesandisthereforeonemethodofchoiceforlocatingpolypeptidesonWesternblotsforblot-sequencing.Itisalsoeasilyreversedwithwaterwashes,facilitatingsubsequentimmunologicaldetection.Thestaincanbecompletelyremovedfromtheproteinbandsbycontinuedwashing.Commonstainformulationsinclude0.1%(w/v)PonceauSin5%aceticacidor2%(w/v)PonceauSin30%trichloroaceticacidand30%sulfosalicylicacid.
