Basic Info:

  • Chemical Synonym(s): BIAXIN; Claris; Claric; Naxy; Clarithromycin; Expand
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  • CAS Number: 81103-11-9
  • Chemical Formula:


  • MSDS: Download


1.18 g/cm3
Boiling Point
805.5ºC at 760 mmHg
Melting Point
Flash Point
Store in Freezer
colorless to faint yellow
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We help you source Clarithromycin in China

Our Advantages:

Our company has a team of specialized pharmaceutical intermediates, and at the same time we have a wealth of plant resources, we know the reactions each plant excels at, know the waste and exhaust gases for each reaction, and understand the costs and methods of treatment. So, we can quickly match the most suitable plant for you From the material in the lab, to commercial production, we can help you get it fast. We divide the entire pharmaceutical intermediate production process into the following sections: 1. Laboratories develop routes 2. Inter test test 3. Large production shop trial production Every step we have a lot of experience and success stories

We have a 20+ year track record of working with suppliers in China and rating reports on them, and we keep our suppliers updated with the latest news so our customers can get the latest supplier reports. We know the market well and have early warning notifications on upstream raw material prices to help you build a stable supply chain.

When selecting suppliers, our procurement specialists will audit the qualification of suppliers, conduct thorough investigations such as field visits and sample testing, and make ratings to ensure the authenticity and legality of supplier information.

We have a long-term stable cooperation with GLP laboratories, encounter customer test results and supplier test results do not match the situation, we will commission a third party to test to ensure the accuracy, authenticity and reliability of the experimental results. In this way, we can effectively control the product quality problems.

We have a long-term cooperative warehouse and can follow up packaging and labeling according to safety regulations and customer requirements. In order to effectively prevent damage to the goods in transit, we have prepared various reinforcement measures and packaging solutions.

We have a number of international freight companies with whom we have long-standing cooperation, and we can choose several route options according to the customer's requirements. For more difficult or urgent orders, we will prepare several alternative solutions to ensure safe and timely delivery.


We promise to immediately and unconditionally exchange or return the goods if they have quality problems. Our employees who deal with after-sales issues have many years of international work experience and are familiar with various processes in multinational work, so they can communicate and deal with after-sales issues without any obstacles.

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Clarithromycin is also known as klacid. It was discovered during research into the structure of erythromycin. It belongs to a class of drugs called macrolide antibiotics.

It is white or off-white crystalline powder; it is odourless and bitter. It has a different solubility in organic solvents but is insoluble in water. It works by stopping the growth of bacteria.

It can make it from erythromycin. The reaction process includes the reaction with iodomethane in dimethyl sulfoxide and tetrahydrofuran and benzyl chloroformate to make Clarithromycin.

Compared with erythromycin, it has a better antibacterial effect on Gram-positive bacteria such as Streptococcus spp, Pneumococcus and Staphylococcus.


Clarithromycin is prescribed for infections by certain bacteria, including those affecting the respiratory tract, skin, and female genital organs. 

It is also used with other medications to prevent Mycobacterium avium complex (MAC) infection in people who have HIV/AIDS.

It may also use it for other purposes, such as surgery or certain types of cancer. It is also used to prevent pneumonia and other infections in people with a weakened immune system caused by chemotherapy, radiation, or steroids.

In vitro antibacterial activity, it is similar to that of erythromycin. They are also cross-resistant, but in some bacteria, Clarithromycin is the superior choice.

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