Specialized inFactory Supply N-Boc-trans-4-Hydroxy-L-proline Methyl Ester Cas 74844-91-0 With Good Priceand related product development and production

Samples: Available / Stock: Sufficient

Estimated delivery time: 3-5 days

Factory Supply N-Boc-trans-4-Hydroxy-L-proline Methyl Ester (CAS 74844-91-0)

1. Product Information

N-Boc-trans-4-Hydroxy-L-proline Methyl Ester (CAS 74844-91-0) is a high-purity biochemical intermediate widely used in pharmaceutical and peptide synthesis. Key specifications include:

Chemical Name: N-Boc-trans-4-Hydroxy-L-proline Methyl Ester
CAS Number: 74844-91-0
Molecular Formula: C12H19NO5
Molecular Weight: 257.28 g/mol
Appearance: White to off-white crystalline powder
Purity: ≥98% (HPLC)
Storage: 2-8°C in a dry, dark environment

2. Product Usage

This compound serves as a critical building block in:

Peptide synthesis (e.g., introducing hydroxyl groups in proline derivatives)
Pharmaceutical intermediates for antibiotics and antiviral drugs
Protecting group strategies in organic chemistry
Biochemical research involving collagen mimics

3. Product Application

Handling & Storage

Store in airtight containers under inert gas (argon/nitrogen)
Avoid prolonged exposure to light, heat, or moisture

Usage Guidelines

Dissolve in DMF, DCM, or THF for reactions
Recommended working concentration: 0.1-0.5 M
Use PPE (gloves, goggles) during handling

4. Case Studies

Case 1: Peptide Antibiotic Synthesis

In the production of cyclic peptide antibiotics, researchers used 500 mg of N-Boc-trans-4-Hydroxy-L-proline Methyl Ester as a protected intermediate. The Boc group was selectively removed using TFA/DCM (1:4) to enable further chain elongation, achieving 92% yield.

Case 2: Antiviral Drug Intermediate

A pharmaceutical company utilized this compound as a chiral precursor in oseltamivir analog synthesis. The hydroxyl group facilitated stereoselective coupling, reducing byproduct formation by 40% compared to alternative reagents.

5. Contact Us

For pricing, bulk orders, or technical queries:

Email: info@vivalr.com
Tel: (86) 15866781826

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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

"vivalr 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."

Marcus Long

" 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."

Emma Kung

" 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."

Lisa Phoenix

" 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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