p-Nitrophenyl Phosphate Liquid Substrate System, CAS No.4264-83-9

CAS: 4264-83-9 Cat. No.: P755472 Peso molecular: 263.06 Número EC: 224-246-5 PubChem CID: 77949
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GRADE & PURITY liquid
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Size
Estado
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Qty
100ml
P755472-100ml
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
236,90US$
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Why this grade

liquid for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 18 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Descripción general

The p-Nitrophenyl Phosphate (pNPP) Liquid Substrate System combines p-nitrophenyl phosphate, buffer, and the required magnesium cations in a convenient, ready-to-use, single solution reagent. Producing a soluble end product, pNPP is the substrate of choice in alkaline phosphatase enzyme immunoassays.
Application:
p-Nitrophenyl Phosphate Liquid Substrate System has been used as a substrate to determine the activity of alkaline phosphatase in alkaline phosphatase assay.
Substrate for alkaline phosphatase that yields a soluble yellow end product that may be read at 405 nm. The reaction may be stopped with 3N NaOH and read at 405 nm. Recommended for ELISA (microwell) procedures, not recommended for membrane applications.

Specifications

Product Name
p-Nitrophenyl Phosphate Liquid Substrate System, CAS No.4264-83-9
Especificaciones y pureza
liquid
Mecanismos bioquímicos y fisiológicos
4-Nitrophenyl phosphate disodium salt hexahydrate (pNPP) is a non-proteinaceous and non-specific substrate for determining protein tyrosine phosphatase activity. Hydrolysis of pNPP produces p-nitrophenol. It is a common chromogenic substrate for alkaline
CAS
4264-83-9
Tipo de molécula
Bioreagents/Buffer
Almacenamiento y envío
Concentración
liquid
Condiciones de almacenamiento de almacenamiento
Store at -20°C
Enviado en
Ice chest + Ice pads

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganic acids and derivatives
ClaseOrganic phosphoric acids and derivatives
SubclassPhosphate esters
Intermediate Tree Nodes Aryl phosphates - Aryl phosphomonoesters
Direct ParentPhenyl phosphates
Alternative Parents Nitrobenzenes  Phenoxy compounds  Nitroaromatic compounds  Propargyl-type 1,3-dipolar organic compounds  Organic oxoazanium compounds  Organopnictogen compounds  Organooxygen compounds  Organonitrogen compounds  Organic sodium salts  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic homomonocyclic compounds
Substituents Phenyl phosphate - Nitrobenzene - Phenoxy compound - Nitroaromatic compound - Monocyclic benzene moiety - Benzenoid - C-nitro compound - Organic nitro compound - Organic oxoazanium - Organic alkali metal salt - Allyl-type 1,3-dipolar organic compound - Propargyl-type 1,3-dipolar organic compound - Organic 1,3-dipolar compound - Organic nitrogen compound - Organic salt - Organic sodium salt - Hydrocarbon derivative - Organooxygen compound - Organonitrogen compound - Organic oxide - Organopnictogen compound - Organic oxygen compound - Aromatic homomonocyclic compound
DescripciónThis compound belongs to the class of organic compounds known as phenyl phosphates. These are aromatic organooxygen compounds containing a phosphate group, which is O-esterified with a phenyl group.
External Descriptors Not available
Estructura 3D
Modelo de Estructura Química Interactiva





Certificados (CoA, COO, BSE/TSE y tabla de análisis)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:
Preguntas frecuentes y artículos
Alkaline Phosphatase (AP) and Horseradish Peroxidase (HRP) Colorimetric Detection Systems—A Complete Guide: Mechanisms of Soluble Colorimetric vs. Precipitating Substrates, Selection, and Troubleshooting (with Product Navigator Tables 1–3)
Acid Phosphatase: Dephosphorylation Reactions in Acidic Microenvironments and Their Research, Assay, and Detection Applications
Phytase: Enzymological Properties, Mechanism of Action, and Applications in Feed and Food
Glycoprotein Hormone Family: Molecular Features, Signaling Bias, and In Vivo Pharmacokinetics
The Positioning of pNPP in ALP Testing: Quantitative Detection Logic, Application Scenarios, and Selection Criteria
Mechanisms and Experimental Applications of β-GP, Ascorbic Acid, and Dexamethasone in Osteogenic Induction Systems
Citations of This Product
Referencias
1. Sun Baohong, Cui Xin, Zhang Jiachen, Tang Yawen, Sun Hanjun.  (2024)  Highly sensitive hydrolytic nanozyme–based sensors for colorimetric detection of aluminum ions.  ANALYTICAL AND BIOANALYTICAL CHEMISTRY,      [PMID:39085422] [10.1007/s00216-024-05462-y]
2. Hao Xiaohong, Zheng Xiangsheng, Zhang Qi, Da Xiongzhi, Wang Yan.  (2024)  Preparation of biodiesel catalyzed by immobilized lipase in magnetic ZIF-8 nanomaterial.  RESEARCH ON CHEMICAL INTERMEDIATES,  50  (7): (3153-3177).  [PMID:] [10.1007/s11164-024-05306-5]
3. Xiangsheng Zheng, Xiaohong Hao, Yan Wang, Siyu Gao, Dantong Wen, Jinchuan Wang.  (2024)  Zr-based MOF as a support for lipase immobilization to enhance enzymatic transesterification for biodiesel production.  Molecular Catalysis,      [PMID:] [10.1016/j.mcat.2024.114603]
4. Shan Qian, Haijiao Li, Yin Chen, Weiyu Zhang, Shengyong Yang, Yong Wu.  (2010)  Synthesis and Biological Evaluation of Oleanolic Acid Derivatives As Inhibitors of Protein Tyrosine Phosphatase 1B.  JOURNAL OF NATURAL PRODUCTS,      [PMID:20964318] [10.1021/np100064m]
5. Panwang Hu, Jinjin Liu, Changkun Xia, Bangxiang Liu, Hengjia Zhu, Xiangheng Niu.  (2023)  Matrix redox interference-free nanozyme-amplified detection of Hg2+ using thiol-modified phosphatase-mimetic nanoceria.  SENSORS AND ACTUATORS B-CHEMICAL,      [PMID:] [10.1016/j.snb.2023.135030]
6. Zhaoying Wu, Rames Kaewmanee, Qianwen Yang, Zimin Wang, EN Xie, Jie Wei, Chao Zhang.  (2023)  Luteolin-loaded biocomposite containing tantalum and polyimide with antibacterial effect for facilitating osteogenic differentiation and bone-bonding.  Journal of Materials Chemistry B,      [PMID:37869981] [10.1039/D3TB01546G]
7. Penghui Hu, Ruiyan Huang, Ye Xu, Tengfei Li, Jun Yin, Yu Yang, Yuan Liang, Xiaohan Mao, Li Ding, Chang Shu.  (2023)  A novel and sensitive ratiometric fluorescent quantum dot-based biosensor for alkaline phosphatase detection in biological samples via the inner-filter effect.  RSC Advances,  13  (4): (2311-2317).  [PMID:36741147] [10.1039/D2RA06956C]
8. Rames Kaewmanee, Fan Wang, Yongkang Pan, Shiqi Mei, Jirut Meesane, Fengqian Li, Zhaoying Wu, Jie Wei.  (2022)  Microporous surface containing flower-like molybdenum disulfide submicro-spheres of sulfonated polyimide with antibacterial effect and promoting bone regeneration and osteointegration.  Biomaterials Science,  10  (15): (4243-4256).  [PMID:35762466] [10.1039/D2BM00622G]
9. Zhenlan Xu, Xiaoting Qian, Chao Wang, Chunrong Zhang, Tao Tang, Xueping Zhao, Lingxiangyu Li.  (2020)  Environmentally relevant concentrations of microplastic exhibits negligible impacts on thiacloprid dissipation and enzyme activity in soil.  ENVIRONMENTAL RESEARCH,      [PMID:32678737] [10.1016/j.envres.2020.109892]
10. Jinchao Wei, Lele Yang, Mai Luo, Yitao Wang, Peng Li.  (2019)  Nanozyme-assisted technique for dual mode detection of organophosphorus pesticide.  ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,      [PMID:31022651] [10.1016/j.ecoenv.2019.04.041]
11. Wei Jinchao, Yang Yu, Dong Jiayi, Wang Shuangpeng, Li Peng.  (2019)  Fluorometric determination of pesticides and organophosphates using nanoceria as a phosphatase mimic and an inner filter effect on carbon nanodots.  MICROCHIMICA ACTA,  186  (2): (1-9).  [PMID:30627852] [10.1007/s00604-018-3175-x]
12. Qinli Xu, Ye Li, Yuhang Zhu, Kunchi Zhao, Rui Gu, Qingsan Zhu.  (2018)  Recombinant human BMP-7 grafted poly(lactide-co-glycolide)/hydroxyapatite scaffolds via polydopamine for enhanced calvarial repair.  RSC Advances,  (48): (27191-27200).  [PMID:35539987] [10.1039/C8RA05606D]
13. Zhi-Gang Wang, Wen-Zhi Bi, Shu-Cui Ma, Nan Lv, Ji-Lin Zhang, De-Hui Sun, Jia-Zuan Ni.  (2015)  Facet-Dependent Effect of Well-Defined CeO2 Nanocrystals on the Adsorption and Dephosphorylation of Phosphorylated Molecules.  PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION,  32  (6): (652-660).  [PMID:] [10.1002/ppsc.201400230]
14. Xiang-Yi He, Gui-Xin Guo, Qing Li.  (2025)  Feedback-regulated dual enzyme–like activity in Ce-MOFs: enabling colorimetric/fluorescence dual-mode detection of tetracycline in water and milk.  DYES AND PIGMENTS,      [PMID:] [10.1016/j.dyepig.2025.113302]
15. Wantong Jiang, Juntao Hu, Jiachun Wang, Ziyu Kuai, Dongwei Zhu, Yu Qin, Mengmeng Niu, Yibing Huang, Quan Luo.  (2025)  Bifunctional gold clusterzymes with surface-engineered catalytic triad design for selective dual-signal detection of p-nitrophenyl organophosphates for food safety.  MICROCHEMICAL JOURNAL,      [PMID:] [10.1016/j.microc.2025.115601]
16. Xuan Zhao, Ruilong Shao, Yiruo Yu, Zhiwen Hu, Yiting Jiang, Yilan Zhou, Zibiao Zhong, Jinping Zhou.  (2026)  TA-Zr/Ce Nanozyme-Mediated Lipopolysaccharide Dephosphorylation: A Targeted Strategy for Sepsis Treatment with Hemoperfusion Applications.  ACS Nano,      [PMID:41489613] [10.1021/acsnano.5c21151]
17. Yu Xie, Xingyu Shen, Zengxing Yi, Yi Liu, Jiayu Wang, Shantong Hu, Guimin Zhang.  (2026)  A highly efficient alkaline phosphatase for dephosphorylation of macromolecular substrates.  INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES,      [PMID:41765307] [10.1016/j.ijbiomac.2026.151134]
18. Juliana Gaithan Kauno, Haili Wei, Shiyu Xia, Wenping Gao, Zohaib Saddique, Fenghua Li, Fengxia Wu, Guobao Xu, Hsien-Yi Hsu, Ziaur Rehman, Yu Tian, Wenxin Niu.  (2026)  Defect-rich Ce–Zr–O solid-solution nanozymes with phosphatase activity for selective phosphate sensing.  ANALYTICA CHIMICA ACTA,      [PMID:] [10.1016/j.aca.2026.345332]
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