487663 | p-Nitrophenyl Phosphate

487663
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      Overview

      Replacement Information

      Key Specifications Table

      Pricing & Availability

      Catalog NumberAvailability Packaging Qty/Pack Price Quantity
      487663-10ML
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          Glass bottle 10 ml
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          Description
          OverviewExcellent substrate for alkaline phosphatase-based ELISA assays. Produces yellow soluble end product that can be read at 405 nm to 410 nm. Both kinetic and endpoint determinations can be performed. Supplied as ready-to-use. A ready-to-use diluent is available separately (Cat. No. 487664).
          Catalogue Number487663
          Brand Family Calbiochem®
          SynonymspNPP
          References
          Product Information
          ATP CompetitiveN
          FormClear to slightly yellow tinged liquid
          FormulationSupplied as a 50X concentrate.
          PreservativeNone
          ReversibleN
          Applications
          Application NotesELISA
          Application CommentsFunctionality check performed on the final product in ELISA.

          Suggested procedure for use of p-NPP in alkaline phosphatase-based ELISAs:

          1. Prepare 1X p-NPP Substrate Solution: To 39 parts dH2O add 1 part 50X p-NPP Concentrate and 10 parts p-NPP Substrate Buffer (Cat. No. 487664). Mix well and store protected from light. This diluted reagent is suitable for up to 10 h after preparation.

          Note: Cat. No. 487664 is an AMP (2-amino-2-methyl-1-propanol)-based buffer. Other buffers, e.g. diethanolamine (DEA)-based and 2-amino-2-methyl-1,3-propanediol (AMPD)-based, may also be employed.

          2. Complete all required incubations with antibodies and alkaline phosphatase-labeled probes.
          3. Wash plate wells at least 4 times with Tris-buffered saline (TBS) containing 0.1% Tween®-20 detergent. DO NOT USE PHOSPHATE BUFFERS; inorganic phosphate is a potent inhibitor of alkaline phosphatase.
          4. After the final wash, shake and blot all residual buffer from the wells.
          5. Add 100 µl of 1X p-NPP Substrate Solution (prepared in Step 2) to each well and incubate for 15-60 min. (If a kinetic study is desired, readings at 405 nm may be taken at intermediate intervals).

          [Note: Optimal incubation times may vary depending on the amount of enzyme present. If color develops too quickly, dilution of the probe, antibody, or alkaline phosphatase-labeled reagent may be required.]

          6. Stop the reaction by adding 100 µl 1 N NaOH.
          7. Read absorbance at 405 nm.

          Note: Variations in time, reagent volumes, and temperature may require further standardization by the user.
          Biological Information
          Primary TargetSubstrate for alkaline phosphatase-based ELISA assays
          Physicochemical Information
          Cell permeableN
          Dimensions
          Materials Information
          Toxicological Information
          Safety Information according to GHS
          Safety Information
          Product Usage Statements
          Storage and Shipping Information
          Ship Code Ambient Temperature Only
          Toxicity Standard Handling
          Storage +2°C to +8°C
          Protect from Light Protect from light
          Do not freeze Ok to freeze
          Special InstructionsDiscard if solution turns bright yellow or becomes turbid.
          Packaging Information
          Transport Information
          Supplemental Information
          Specifications

          Documentation

          SDS

          Title

          Safety Data Sheet (SDS) 

          Certificates of Analysis

          TitleLot Number
          487663

          Brochure

          Title
          Enzyme-Linked Detection Systems Technical Bulletin
          Protein Phosphatases Technical Bulletin
          Data Sheet

          Note that this data sheet is not lot-specific and is representative of the current specifications for this product. Please consult the vial label and the certificate of analysis for information on specific lots. Also note that shipping conditions may differ from storage conditions.

          Revision20-November-2009 JSW
          SynonymspNPP
          ApplicationELISA
          Descriptionp-Nitrophenyl phosphate supplied as a 50X concentrate (0.19 mol/l). For use with p-NPP Substrate Buffer, Cat. No. 487664.
          Backgroundp-Nitrophenyl phosphate is the most common substrate for alkaline phosphatase-based ELISA assays. Hydrolysis of the phosphate ester liberates p-nitrophenol, a soluble, yellow chromogen that can be measured spectrophotometrically at 405 nm (ε = 1.83 x 104 M-1cm-1). As the reaction is linear, kinetic assays can be performed. Endpoint determinations can also be performed by stopping the reaction with strong base and measuring the absorbance at 405 nm. This p-NPP preparation is a stable, convenient, liquid concentrate in a proprietary solvent.
          FormClear to slightly yellow tinged liquid
          FormulationSupplied as a 50X concentrate.
          PreservativeNone
          CommentsFunctionality check performed on the final product in ELISA.

          Suggested procedure for use of p-NPP in alkaline phosphatase-based ELISAs:

          1. Prepare 1X p-NPP Substrate Solution: To 39 parts dH2O add 1 part 50X p-NPP Concentrate and 10 parts p-NPP Substrate Buffer (Cat. No. 487664). Mix well and store protected from light. This diluted reagent is suitable for up to 10 h after preparation.

          Note: Cat. No. 487664 is an AMP (2-amino-2-methyl-1-propanol)-based buffer. Other buffers, e.g. diethanolamine (DEA)-based and 2-amino-2-methyl-1,3-propanediol (AMPD)-based, may also be employed.

          2. Complete all required incubations with antibodies and alkaline phosphatase-labeled probes.
          3. Wash plate wells at least 4 times with Tris-buffered saline (TBS) containing 0.1% Tween®-20 detergent. DO NOT USE PHOSPHATE BUFFERS; inorganic phosphate is a potent inhibitor of alkaline phosphatase.
          4. After the final wash, shake and blot all residual buffer from the wells.
          5. Add 100 µl of 1X p-NPP Substrate Solution (prepared in Step 2) to each well and incubate for 15-60 min. (If a kinetic study is desired, readings at 405 nm may be taken at intermediate intervals).

          [Note: Optimal incubation times may vary depending on the amount of enzyme present. If color develops too quickly, dilution of the probe, antibody, or alkaline phosphatase-labeled reagent may be required.]

          6. Stop the reaction by adding 100 µl 1 N NaOH.
          7. Read absorbance at 405 nm.

          Note: Variations in time, reagent volumes, and temperature may require further standardization by the user.
          Storage +2°C to +8°C
          Protect from light
          Do Not Freeze Ok to freeze
          Special InstructionsDiscard if solution turns bright yellow or becomes turbid.
          Toxicity Standard Handling