Description
Ponceau S (Acid Red 112) is the most commonly used stain for Western blotting. Ponceau S is applied as an acidic aqueous solution. Ponceau S is compatible with antibody-antigen binding, and stains the proteins on the membrane red.
Product information
CAS Number: 6226-79-5
Molecular Weight: 760.57
Formula: C22H12N4Na4O13S4
Chemical Name: tetrasodium 3-hydroxy-4-(2-{2-sulfonato-4-[2-(4-sulfonatophenyl)diazen-1-yl]phenyl}diazen-1-yl)naphthalene-2,7-disulfonate
Smiles: [Na+].[Na+].[Na+].[Na+].[O-]S(=O)(=O)C1C=C2C=C(C(O)=C(N=NC3C=CC(=CC=3S([O-])(=O)=O)N=NC3C=CC(=CC=3)S([O-])(=O)=O)C2=CC=1)S([O-])(=O)=O
InChiKey: KQHKSGRIBYJYFX-WNDMICSESA-J
InChi: InChI=1S/C22H16N4O13S4.4Na/c27-22-20(43(37,38)39)10-12-9-16(41(31,32)33)6-7-17(12)21(22)26-25-18-8-3-14(11-19(18)42(34,35)36)24-23-13-1-4-15(5-2-13)40(28,29)30;;;;/h1-11,27H,(H,28,29,30)(H,31,32,33)(H,34,35,36)(H,37,38,39);;;;/q;4*+1/p-4/b24-23+,26-25+;;;;
Technical Data
Appearance: Solid Power
Purity: ≥98% (or refer to the Certificate of Analysis)
Solubility: DMSO : < 1 mg/mL (ultrasonic) (insoluble or slightly soluble). H2O : 35.71 mg/mL (46.95 mM; Need ultrasonic).
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis
Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.
Shelf Life: ≥12 months if stored properly.
Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.
Drug Formulation: To be determined
HS Tariff Code: 382200
Products are for research use only. Not for human use.
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