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Dimethyl 4-Aminophthalate CAS 51832-31-6: Comprehensive User Guide

1. Basic Information

Product Name: Dimethyl 4-Aminophthalate

CAS Number: 51832-31-6

Molecular Formula: C₁₀H₁₁NO₄

Molecular Weight: 209.20 g/mol

Appearance: White to off-white crystalline powder

Purity: ≥98% (HPLC)

Storage: Store in a cool, dry place (2-8°C), protected from light.

2. Applications

Dimethyl 4-Aminophthalate (CAS 51832-31-6) is a versatile intermediate widely used in:

Pharmaceutical synthesis (e.g., antitumor agents, antiviral drugs)
Organic chemistry research for building complex molecules
Material science for polymer and dye production
Fluorescent probe development in biochemical assays

3. Usage Guidelines

Safety Precautions: Wear PPE (gloves, goggles, lab coat) and work in a fume hood.

Solubility: Soluble in DMSO, DMF; partially soluble in ethanol.

Reaction Conditions: Typical use at 0.1-5 mol% in inert atmospheres (N₂ or Ar).

Handling: Avoid moisture and strong oxidizers. Dispose per local regulations.

4. Use Cases

Case Study 1: Synthesis of Fluorescent Dyes

Used as a key precursor in preparing xanthene-based fluorescent dyes (λ_em = 550 nm) for cell imaging.

Case Study 2: Pharmaceutical Intermediate

Employed in a 3-step synthesis of kinase inhibitors, achieving 82% yield under Pd-catalyzed coupling conditions.

Case Study 3: Polymer Modification

Enhanced thermal stability of polyesters by incorporating 2 wt% dimethyl 4-aminophthalate as a co-monomer.

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The Manager has Something to Say

This is William, CEO of Zhishang Chemical Co., Ltd.

Welcome to visit our factory . As the top chemical manufacturer, we have been striving for product quality, innovation , R&D, and customer service for the past 7 years. In the next 10 years or even longer, we are committed to becoming the most reliable chemical supplier in the world , creating a well-known international brand trusted by customers, with the spirit of “one meter wide, ten thousand meters deep”, we continue to focus on product research and development, continue to focus on customer service, continue to improve the supply chain service system, to create a professional chemical supply service team, to achieve win-win long-term cooperation. Please feel free to contact us if you have any questions.

Drug impurities to intermediates. Years of expertise.

Experience in the synthesis of complex compounds derived from American technology
Focus on the synthesis of difficult compounds
ISO 17034 dual system certification
National high-tech enterprise
2000 square R&D center
More than 20 research and development personnel,
12 sets of research and development equipment, 10 fume hoods and 6 university laboratories have been developed in cooperation
18 patents, 140 sets of chemical synthesis processes

Solid QMS. Offer top-quality products and services.

Through more than ten years of continuous technological innovation and experience accumulation, the team's R&D personnel have established a complete quality management system for CATO, and have successively obtained ISO9001, ISO17034, CNAS and other international certifications.
For the United States, Australia, Japan, South Korea, Sweden, France, Spain and other global more than 2000 customers to provide high-quality products and services, has won the recognition and trust of customers in the industry.

More than 12 sets of equipment to ensure quality.

The emphasis on quality is the basis for our survival and development, and is the most basic requirement for the products and services we provide. CATO has established a scientific, strict and comprehensive quality prevention and assurance system in accordance with international quality standards. Through advanced testing equipment such as GC-MS, chromatograph, nuclear magnetic resonance, scanning electron microscope, and ultraviolet light, quality management is implemented into every aspect of production and operation activities such as raw materials, inventory, production, testing, sales, verification, and training, and "All actions are controlled and traceable" as the work code of conduct for CATO employees.

Over 1000 cases. Synthesize complex compounds.

Currently, CATO serves more than 500 pharmaceutical companies, biotechnology and other companies around the world. Project types cover the entire cycle from pre-clinical to commercialization stages. As of 2020, CATO has delivered more than 1,000 projects in total.
The company has core technologies in key core technology fields such as high-end fluorine chemistry, asymmetric chiral synthesis, glycoside and biological enzyme technology, and continuous microreactors.

Mode of Transportation

By Air, fast but expensive.

By Sea, usual and economy.

By Train, suit for middle Asia countries.

FAQ

Does it support auditing?

Environmental Protection Science and Technology Park, Zhengfeng Road, High-tech Zone, Jinan City, Shandong Province

Whether to provide samples?

Free samples can be provided, and customers only need to pay the corresponding shipping costs

Delivery time

There are stock in the warehouse, and some products need to be customized for production within 3 working days, depending on the workshop situation and production schedule

What payment methods and currencies are accepted here?

We accept payment methods such as TT, Western Union, and letter of credit, etc. Meanwhile, we support currencies like US dollars, euros, RMB, and Bitcoin, etc.

Can additional test indicators be added?

We can provide moisture, UV, IR, HNMR, CNMR, two-dimensional nuclear magnetic spectroscopy, optical rotation detection, elemental analysis, TGA analysis and residue analysis and other related tests to support personalized needs.

Technical direction

In the early stage, our company mainly engaged in drug impurity synthesis and standard product production, with core technologies in chirality, fluorine chemistry, and heterocycles.

Why Vivalr’s delivery rate is guaranteed to be 99.99%

2000+

square meter R&D center

12+

China(set) of R&D equipment

10+

Fume hood

20+

R&D team

User’evaluation of us

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" Sincere Chemical team visited our USA factory in the year of 2017. We think highly of cooperation with them. We thanked you for the past excellent orders and best product quality. We also talked about some new products for future orders. We will be still in strategic cooperation in the future and help each other."

Marcus Long

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Emma Kung

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