Specifications
- Purity
- ≥97% (NMR)
- Identity
- 1H-NMR
- Appearance
- White to off-white powder
Properties
- Fluorescence
- λex 319 nm, λem 384 nm (pH 9.0)
- Solvents
- water (50 mg/ml)
Category: Fluorescent Detection
4-Methylumbelliferyl phosphate (4-MUP) is a fluorogenic substrate for phosphatases (mainly alkaline). It is converted to the fluorescent product 4-methylumbelliferone (4-MU), which has an emission maximum at 445-454 nm. The excitation maximum for 4-MU is pH-dependent: 330, 370, and 385 nm at pH 4.6, 7.4, and 10.4, respectively. Therefore, this phosphatase substrate is not well suited for living cell or continuous assays since 4-MU only develops maximum fluorescence at a pH value of >10. Spectral data: λex=319nm, λem=384nm (pH 9.0). λex=360nm, λem=449nm (for reaction product).
Synonyms | 4-MUP, 4-MU-phopahte, MUP, Disodium 4-methylumbelliferyl phosphate, 7-hydroxy-4-Methylcoumarin phosphate disodium salt |
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Purity | ≥97% (NMR) |
Appearance | White to off-white powder |
CAS-Number | 22919-26-2 |
Molecular Formula | C10H7Na2O6P |
Molecular Weight | 300.11 |
Identity | 1H-NMR |
Solvents | water (50 mg/ml) |
Fluorescence | λex 319 nm, λem 384 nm (pH 9.0) |
Smiles | CC(C1=CC=C(OP([O-])([O-])=O)C=C1O2)=CC2=O.[Na+].[Na+] |
InChi Key | WUUDJQVNZPEPKN-UHFFFAOYSA-L |
Shipping | AMBIENT |
Short Term Storage | +4°C |
Long Term Storage | -20°C |
Handling Advice | Protect from light and moisture. |
Use / Stability | Stable for at least 2 years after receipt when stored at -20°C. |
Transportation | Not dangerous goods |
References | (1) D. Robinson & P. Willcox, Biochim. Biophys. Acta 191, 183 (1969), (2) C.J. Cornish, et al., Am. J. Clin. Pathol. 53, 68 (1970), (3) J.P. Chambers, et al., Clin. Chim. Acta 80, 67 (1977), (4) F. Watanabe, et al., Clin. Chim. Acta 91, 273 (1979), (5) F.A. Anthony, et al., Anal. Biochem. 155, 103 (1986), (6) K. Soyama, et al., Forensic Sci. Int. 18, 195 (1981), (7) H.J. Radzun, et al., Clin. Chim. Acta 123, 203 (1982), (8) F.A. Anthony, et al., Anal. Biochem. 155, 103 (1986), (9) K.Y. Xiao, et al., J. Tongji Med. Univ. 13, 206 (1993), (10) K. Bednarska, et al., Mediators Inflamm. 2006, 19307 (2006), (11) J.J. Weiland, et al., Anal. Biochem. 361, 140 (2007) |
InChi | InChI=1S/C10H9O6P.2Na/c1-6-4-10(11)15-9-5-7(2-3-8(6)9)16-17(12,13)14, /h2-5H,1H3,(H2,12,13,14), /q, 2*+1/p-2 |
Quantity | 250 mg, 1 g, Bulk |