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Specialized in4-(4-Chloro-benzyl)-2H-phthalazin-1-one CAS 53242-88-9and related product development and production

Chemical Name: 4-(4-Chloro-benzyl)-2H-phthalazin-1-one
CAS No.: 53242-88-9
Molecular Fomula: C15H11ClN2O
Molecular weight: 270.71
Appearance: White powder

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

Table of Contents

4-(4-Chloro-benzyl)-2H-phthalazin-1-one (CAS 53242-88-9) Technical Specifications

Basic Chemical Properties

Parameter Specification
CAS Number 53242-88-9
Molecular Formula C15H11ClN2O
Molecular Weight 270.71 g/mol
Appearance Off-white to pale yellow crystalline powder
Purity (HPLC) ≥98%
Melting Point 218-222°C
Solubility Soluble in DMSO, methanol; slightly soluble in water

Comparative Analysis

Vendor Purity Packaging Lead Time Price Range
Vivalr Chemical 98-99% 1kg foil bags 2-3 weeks $850-$920/kg
Supplier B 97-98% 500g bottles 4-6 weeks $900-$980/kg
Supplier C ≥95% Bulk drums 8-10 weeks $780-$850/kg

Pharmaceutical & Synthetic Applications

Primary Use Cases

  • Key intermediate in kinase inhibitor synthesis
  • Building block for anticancer drug candidates
  • Precursor in PARP inhibitor development
  • Ligand in catalytic asymmetric synthesis

Synthetic Protocol Example

Step 1: Benzylation of phthalazinone core
Step 2: Chlorination at para position
Step 3: Purification via column chromatography
Typical yield: 68-72% (optimized conditions)

Documented Industry Implementations

Case Study 1: Oncology Drug Development

Client: EuroPharma Therapeutics (Germany)
Application: Used in synthesis of third-generation PI3K inhibitors
Scale: 120kg batch production
Result: Achieved 99.2% purity for clinical trial materials

Case Study 2: Academic Research

Client: Cambridge Drug Discovery Centre (UK)
Application: Core structure in novel HDAC inhibitor library
Outcome: Identified 3 lead compounds with IC50 < 50nM

Vendor Evaluation Matrix

Criterion Vivalr Competitor X Competitor Y
Technical Support 24/7 expert access Business hours only Email-only support
Regulatory Compliance GMP/ISO certified ISO only Non-certified
Custom Synthesis Available Limited Not available

Request Product Documentation

Contact our technical team for:
- Certificate of Analysis (CoA)
- Safety Data Sheets (SDS)
- Custom synthesis quotations
Email: info@vivalr.com
Tel: (86) 15866781826

Why Choose Vivalr?

  • Batch-to-batch consistency guaranteed
  • Strict impurity profile control (<0.5% total)
  • Expedited shipping options available
  • Compliant with ICH Q7 guidelines
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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

" I just got the product. The quality is awesome. I’m very happy. Hope to place soon a new order in your company. Also wish for our future business."

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

" We are a pharmaceutical manufacturer in Brazil. Happy to cooperate with Sincere Chemical, especially with Zhai. He is patient and friendly. Satisfied with his 24/7 service. We are not only cooperators but also best friends."

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