When US citizens are abroad and unable to obtain a medallion signature guarantee stamp, with prior notice of the substitution some financial institutions may accept a United States embassy seal in its place.
Phenyl-2-propanone (Compound 1), commonly referred to as P2P, is an intermediate precursor in the manufacture of d,l-amphetamine, d,l-methamphetamine, and other similar phenethylamines (Fig. 1).
Product Description approximately 30 minutes at room temperature. SIGMAFASTâ¢ p-Nitrophenyl phosphate (pNPP) tablets have been developed for use as a soluble. substrate for the detection of alkaline phosphatase. activity in Enzyme Immuno Assays (EIA and ELISA).1,2. pNPP is the EIA/ELISA substrate of choice in alkaline. phosphatase systems as it exhibits high sensitivity.