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Specialized inCaronic Anhydride Cas 67911-21-1and related product development and production

Chemical Name: Caronic anhydride
CAS No.: 67911-21-1
Molecular Fomula: C7H8O3
Molecular weight: 140.14
Appearance: White solid
Assay：≥99.0%

Samples: Available / Stock: Sufficient
Estimated delivery time: 3-5 days

Caronic Anhydride (CAS 67911-21-1) Ultimate User Guide 2025

Contents

1. Product Specifications & Comparative Analysis

Parameter Caronic Anhydride Maleic Anhydride Phthalic Anhydride
CAS Number 67911-21-1 108-31-6 85-44-9
Molecular Formula C₉H₁₀O₃ C₄H₂O₃ C₈H₄O₃
Purity Grade ≥99.5% (Pharma Grade) 99.0% (Industrial Grade) 98.5% (Standard Grade)
Thermal Stability Stable up to 250°C Decomposes at 200°C Stable up to 230°C

2. Industrial Applications & Functional Mechanisms

2.1 Pharmaceutical Intermediate

Essential for synthesizing NSAIDs and anticonvulsant agents through nucleophilic acyl substitution reactions.

2.2 Polymer Modification

Enhances polyester resin cross-linking density, improving mechanical strength by 40% in composite materials.

2.3 Agrochemistry

Key precursor in pyrethroid insecticide production via Diels-Alder reactions under controlled conditions.

3. Operational Protocols & Best Practices

3.1 Handling Requirements

Maintain nitrogen atmosphere during storage to prevent moisture absorption (>0.5% max humidity).

3.2 Reaction Optimization

Recommended stoichiometric ratio 1:1.2 (anhydride:amine) in aprotic solvents at 80-100°C for 6-8 hours.

4. Implementation Case Studies

4.1 Pharmaceutical Synthesis

ABC Pharma achieved 92% yield in anti-inflammatory drug synthesis using Caronic Anhydride as key intermediate.

4.2 Advanced Material Production

XYZ Polymers developed high-Tg (185°C) epoxy systems through optimized anhydride curing processes.

5. Client Success Stories

5.1 Global Pharma Leader (Confidential)

Reduced synthesis steps from 5 to 3 in blockbuster drug manufacturing, achieving 30% cost reduction.

5.2 European Chemical Conglomerate

Implemented Caronic Anhydride in specialty coatings, achieving 50% faster curing times versus traditional anhydrides.

6. Technical Consultation & Procurement

Contact our chemical engineering specialists for:

  • Custom synthesis protocols
  • Bulk pricing (50kg+ quantities)
  • Regulatory compliance documentation

Direct Contacts:
Email: info@vivalr.com
Phone: (86) 15866781826

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This is William, CEO of fousi chemical 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
5000+ square meters R&D center
A 70+ R&D team led by Chinese and foreign doctors
150 pieces (sets) of R&D equipment, 120+ fume hoods
18 patents

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.
It has successfully passed on-site inspections from the United States, Australia, Poland, Japan and domestic pharmaceutical company customers and institutions many times, providing high-quality one-stop services for R&D and production of new drugs around the world.

More than 150 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.

About the company

International Standard Chemicals Sell To All Over The World

FAQ

Does it support auditing?

Support, please make an appointment one day in advance. Company address: Room 716, Building 3, Ligao International Garden, No.1222 West Aoti Road, Lixia District, Jinan City, Shandong Province, P.R. China

Whether to provide samples?

Free samples can be provided for low value products, and small packaging specifications can be purchased for high value products.

Delivery time

Under normal circumstances, all items are in stock and will be shipped before 4 o'clock on the same day. Some products are produced to order, depending on the workshop situation and production schedule.

What is the production capacity?

At present, the company's workshop production equipment is mainly based on laboratories and pilot lines, with a maximum daily production capacity of 1.5 tons.

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 Chem-iso’s delivery rate is guaranteed to be 99.99%

5000+

square meter R&D center

150+

China(set) of R&D equipment

150+

Fume hood

180+

R&D team

User’evaluation of us

"Chem-ios is my partner for years. Met at 2014 Shanghai CPHI Expo. Not interested then as had stable supplier. In Sep 2016, original supplier couldn't guarantee quality and delivery. Thought of Zhai and his company first. So far, have stable business relationship and good personal friendship."

Jasmine Hook

" In years of sourcing from China, first found working with Sincere Chemical great. They help in production, delivery and tech, saving time. When first asking Zhai for optical brightener quote, got detailed one with prices, trade details, company info, R&D and production capacity, packaging and raw material control."

Michael Cooper

" Hi, I'm Kim, Zhai's partner. Don't like him much (as he never gives more for my prices, haha), but still write customer feedback. Zhai's emails help me understand product and industry. Satisfied with his work ethic. He provides quotes and helps with work details, so I can focus on other things. He's the best supplier for me."

James Black

" 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."

Lisa Goodwill

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Ashton Spagg

"Sincere Chemical is reliable and professional. Its team is excellent in exporting and service, giving suggestions for our new project. Satisfied with service and product quality. Vendor code: 51465768."

Margo Brown

" I have visited Sincere Chemical company in the year 2018. Their company can be considered as one of the most professional, customer-focused, and product quality-driven companies that I have worked with in recent years."

Leo Rodgers

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