Trimethoprim CAS 738-70-5

Ipral , Promotion Season Now in Store and Free Sample for Testing with Factory Price

Chemical Name: Trimethoprim

CAS No.:738-70-5

Molecular Fomula:C10H11N3O3S

Molecular weight:253.28


Sample: Available

Trimethoprim CAS#738-70-5

Description of Trimethoprim

  • Ipral(TMP) is an antibiotic used mainly in the treatment of bladder infections. Other uses include for middle ear infections and travelers’ diarrhea. With sulfamethoxazole or dapsone it may be used for Pneumocystis pneumonia in people with HIV/AIDS. It is taken by mouth.
  • Common side effects include nausea, changes in taste, and rash. Rarely it may result in blood problems such as not enough platelets or white blood cells. May cause sun sensitivity. There is evidence of potential harm during pregnancy in some animals but not humans. It works by blocking folate metabolism via dihydrofolate reductase in some bacteria which results in their death.
  • Trimethoprim was first used in 1962. It is on the World Health Organization’s List of Essential Medicines, the most important medications needed in a basic health system. It is available as a generic medication and is not very expensive. In the United States 10 days of treatment is about 21 USD.

Basic Info of Trimethoprim

Chemical Name







Molecular Formula


Molecular Weight






Safety Info



Hazard Class


Safety Statements


HS Code


Packing Group


WGK Germany



UN 3249

Risk Statements


Hazard Codes



Appearance & Physical State

white to yellowish powder


1.252 g/cm3

Boiling Point

526ºC at 760 mmHg

Melting Point


Flash Point



Stable. Incompatible with strong oxidizing agents, acids.

Storage Condition


Numbering system



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What is Trimethoprim?

  • With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. 
  • One such product is Ipral  which has developed particularly rapidly in recent years. Do you know about Ipral?
  • The official answer:Ipral, abbreviated as TMP, is an organic compound with the chemical formula C14H18N4O3, a white or to light yellow crystalline powder, odourless, bitter in taste, slightly soluble in chloroform, slightly soluble in ethanol or acetone, practically insoluble in water and soluble in glacial acetic acid.Methicillin is a synthetic broad-spectrum antibacterial agent, used alone for respiratory tract infections, urinary tract infections, intestinal infections, etc. It can be used to treat septicaemia, meningitis, otitis media, typhoid fever and shigellosis (bacillary dysentery) caused by sensitive bacteria.

What’s the application of Trimethoprim?

A new oral broad-spectrum antibacterial drug. The antibacterial spectrum is similar to that of sulphonamides but is more potent and effective against a wide range of gram-positive and negative bacteria. It is not suitable for use as an antibacterial agent on its own as bacteria will easily develop resistance to it. The combination of methotrexate and sulphonamides can enhance the antibacterial effect Chemicalbook several times to tens of times. It is mainly used as a synergist for sulphonamides. It is generally used in a ratio of 1:5. It can also be used as a veterinary medicine for the treatment of septicaemia caused by coliform hepatic bacteria in poultry, chicken dysentery, avian typhoid, cholera and secondary bacterial infections of the respiratory system. It can also be used for the treatment of coccidiosis.


Sincere to the customer and in good faith of quality is our forever followed motto. It’s the basement to be a human and do business. We take all responsibility for our products and service sincerely. We are a company integrating R&D, production, and sales. The design, research, and development of pharmaceutical intermediates include more than 330 kinds of pharmaceutical intermediates such as Anti-infectives, Cardiovascular and Cerebrovascular Systems, Digestive systems, Santi-tumor, Nervous systems, Geriatric Drugs, and Gynecological Drugs. At the same time, we have more than 4,000 factories in strategic cooperation with nearly 50,000 chemical products, so we can provide you with a one-stop purchasing service, which greatly saves customers’ procurement costs and time.

Hello, I’m Pew Ni, the chemical products one-stop solution expert.

Hi, I‘m Peter Ni, the founder of Sincere-Chem, I’ve been running a company in China that exporting chemicals, pharmaceuticals, and intermediates for over 70 countries now. And a range of 50,000 products with the best quality and competitive price to meet your different purchasing needs.

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Keywords of Trimethoprim

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United Kingdom Giles
United Kingdom Giles
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Peter has been my partner for many years, we met at the Shanghai CPHI Fair in 2014, for the first time I didn't have much interest in Peter's products because our company had a stable supplier. Although we didn't work together, Peter would often send me important news and interesting trend information about the industry, so we became good friends, even though I didn't place any orders with him during this time, even if it was a sample order. In September 2016, our original supplier was unable to provide us with the quality and delivery guarantees we needed, so I first thought of Peter and his company. Until now, we have maintained a very good personal friendship in addition to a steady business relationship.
India Shikhar
India Shikhar
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In all my years of sourcing from China, I first time to found that working with Sincere Chemical was so good, they helped me with all the production and delivery as well as a lot of technical expertise, which saved me a lot of time. When I first approached Peter for a quotation for Optical Brightener, he made me a detailed quotation with not only prices but also foreign trade details, company profile, company strengths, R&D capabilities, production capacity, packaging methods, raw material control, environmental protection, and much more. This information was a very important reference for me in making purchasing decisions. Sincere Chemical is a trustworthy supplier and I believe our business will grow from strength to strength!
Korea Kim
Korea Kim
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Hi, I'm Kim, I'm Peter's partner and although I don't like him very much (because he never gives me more money for my prices, hahaha) I'm still willing to write him customer feedback. As an international buyer, I have to deal with a lot of things every day and my inbox is often full of development letters. It's a lot of junk and meaningless pleasantries, which I don't like that much, but Peter's emails always give me a better understanding of the product and the industry. I am also very pleased with his work ethic, and I am very happy with his work every time I work with him, not only in providing quotations but also in facilitating all the details of my work so that I can concentrate more on other things, so he is the best supplier for me. Although his prices are not the lowest among all suppliers, his products give me the greatest peace of mind.
USA Franklin
USA Franklin
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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.
Canada Kate
Canada Kate
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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.
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Sincere Chemical is a reliable and professional company. Not only on exporting but also their professional team service. Their team gave us so many suggestions for our new project. We are really satisfied with their awesome service and best product quality. Sincere-Chem’s vendor code is 51465768 in our cooperated vendor list system.
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Brazil Aline
Brazil Aline
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We are a pharmaceutical products manufacturer in Brazil. I’m happy to cooperate with Sincere Chemical especially cooperate with Peter. Peter is patient and friendly. I’m satisfied with his 24*7 hours service. We are not only cooperators but also best friends with each other.
Mexico Gonzalo
Mexico Gonzalo
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Great service and very supportive. This is my first order and I feel fortunate to be with Peter and his company. Product received was the right good quality product, so my review is more related with the quality, service and shipment. Thank you for sending. next time I will order again. Good supplier...
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