Name: MUP, disodium salt [4-Methylumbelliferyl phosphate, disodium salt] *CAS 22919-26-2*
Brand: AAT Bioquest
SKU: 11610
Availability: InStock

MUP, disodium salt

4-Methylumbelliferyl phosphate, disodium salt; CAS 22919-26-2

A fluorogenic substrate for phosphatases. It is widely used for detecting phosphatases in solution. However this phosphatase substrate is not well suited for living cell or continuous assays since MU (4-methylumbelliferone), the enzymatic product, which only develops maximum fluorescence at pH value of >10. Thus it is also difficult to use MUP for the detection of phosphatases that have acidic optimal pH range such as acid phosphatases. AAT Bioquest is pleased to offer MUP Plus that is developed to address this pH limitation associated with MUP substrates.

Protocol

COA

Catalog	Size	Price	Quantity
11610	25 mg	Price
11612	10 g	Price

Calculators

Common stock solution preparation

Table 1. Volume of Water needed to reconstitute specific mass of MUP, disodium salt [4-Methylumbelliferyl phosphate, disodium salt] *CAS 22919-26-2* to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

	0.1 mg	0.5 mg	1 mg	5 mg	10 mg
1 mM	333.211 µL	1.666 mL	3.332 mL	16.661 mL	33.321 mL
5 mM	66.642 µL	333.211 µL	666.422 µL	3.332 mL	6.664 mL
10 mM	33.321 µL	166.606 µL	333.211 µL	1.666 mL	3.332 mL

Molarity calculator

Enter any two values (mass, volume, concentration) to calculate the third.

Mass (Calculate)		Molecular weight		Volume (Calculate)		Concentration (Calculate)		Moles
mg	÷	300.11 g/mol	=	mL	x	mM	=	mmol

References

View all 76 references: Citation Explorer

Application of intracellular alkaline phosphatase activity measurement in detection of neutrophil adherence in vitro

Authors:

Bednarska K, Klink M, Sulowska Z.

Journal:

Mediators Inflamm (2006): 19307

Evaluation of an alternative method for the enumeration and confirmation of Clostridium perfringens from treated and untreated sewages

Authors:

Wohlsen T, Bayliss J, Gray B, Bates J, Katouli M.

Journal:

Lett Appl Microbiol (2006): 438

Fluorometric cell-ELISA for quantifying rabies infection and heparin inhibition

Authors:

Rincon V, Corredor A, Martinez-Gutierrez M, Castellanos JE.

Journal:

J Virol Methods (2005): 33

Relative movement and soil fixation of soluble organic and inorganic phosphorus

Authors:

Anderson BH, Magdoff FR.

Journal:

J Environ Qual (2005): 2228

Purification and partial characterization of an acid phosphatase from Spirodela oligorrhiza and its affinity for selected organophosphate pesticides

Authors:

Hoehamer CF, Mazur CS, Wolfe NL.

Journal:

J Agric Food Chem (2005): 90

Physical properties

Molecular weight	300.11
Solvent	Water

Spectral properties

Correction factor (280 nm)	0.1
Extinction coefficient (cm ^-1 M ^-1)	18000
Excitation (nm)	360
Emission (nm)	448

Storage, safety and handling

H-phrase	H303, H313, H333
Hazard symbol	XN
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R22
Storage	Freeze (< -15 °C); Minimize light exposure
UNSPSC	12171501
CAS	22919-26-2

Telephone
Fax
Email	sales@aatbio.com
International	See distributors
Bulk request	Inquire
Custom size	Inquire
Technical Support	Contact us
Request quotation	Request
Purchase order	Send to sales@aatbio.com
Shipping	Standard overnight for United States, inquire for international

Page updated on October 9, 2025