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Home > Active Pharmaceutical Ingredients
In the chemical industry, API is Active Pharmaceutical Ingredients, meaning the active ingredients in pharmaceutical products. It is the core substance for producing the intended therapeutic effect. The quality of Active Pharmaceutical Ingredients is critical to the safety and efficacy of the final pharmaceutical product. Therefore, the production of API chemicals involves strict regulatory guidelines and standards, such as GMP (Good Manufacturing Practices) and GLP (Good Laboratory Practices). On ECHEMI, you can select API chemical products on your demand from various active pharmaceutical ingredient manufacturers and distributors.

Active Pharmaceutical Ingredients Suppliers

Buying Active Pharmaceutical Ingredients (APIs) can still be challenging, especially when quality, compliance, and supply stability matter most. On ECHEMI, you can access 743 qualified manufacturers and 379 verified distributors across China, India, the USA, Europe, and other regions. Compare API specifications, review compliance standards, and connect directly with reliable suppliers to support your pharmaceutical production and research needs.
Explore active pharmaceutical ingredients for your specific needs now.
4831 Active Pharmaceutical Ingredients items

Cefaclor

CAS No: 53994-73-3

Formula: C15H14ClN3O4S

Categories: Active Pharmaceutical Ingredients > Antibiotics

Cefaclor, is a second-generation cephalosporin antibiotic used to treat certain infections caused by bacteria such as pneumonia and infections of the ear, lung, skin, throat, and urinary tract.Target: AntibacterialCefaclor belongs to the family of antibiotics known as the cephalosporins (cefalosporins). The cephalosporins are broad-spectrum antibiotics that are used for the treatment of septicaemia, pneumonia, meningitis, biliary tract infections, peritonitis, and urinary tract infectionMore

(±)-Promethazine

CAS No: 60-87-7

Formula: C17H20N2S

Categories: Active Pharmaceutical Ingredients > Antiallergic Drugs

ChEBI: A tertiary amine that is a substituted phenothiazine in which the ring nitrogen at position 10 is attached to C-3 of an N,N-dimethylpropan-2-amine moiety.More

Felodipine

CAS No: 72509-76-3

Formula: C18H19Cl2NO4

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Felodipine is a long-acting 1,4-dihydropyridine calcium channel blocker.Target: Calcium ChannelFelodipine is a long-acting 1,4-dihydropyridine calcium channel blocker (CCB)b. It acts primarily on vascular smooth muscle cells by stabilizing voltage-gated L-type calcium channels in their inactive conformation. Felodipine significantly relaxes KCl-contracted porcine coronary segments by blocking the Ca2+ channels, displaying ~50 times more potent than nifedipine (IC50 of ~8 nM) and ~430 timMore

Thiabendazole

CAS No: 148-79-8

Formula: C10H7N3S

Categories: Active Pharmaceutical Ingredients > Antimicrobials

Thiabendazole, as a member of the benzimidazole class of compounds, is unique in that it carries a 1,3-thiazole-4-yl substituent at position 2. This compound has demonstrated significant fungicidal effects in the agricultural field, particularly in the post-harvest stage, with excellent control over a range of pathogens such as Aspergillus, Botrytis, Cladosporium, and Phytophthora. Thiabendazole typically appears as a white or cream-colored odorless powder that sublimes at temperatures above 590°F and emits a bright light in acidic solutions. Its applications are widespread, and it can be applied in the form of dust, flowing powder, or water-dispersible powder to ensure systemic control of fungi and parasites. The background of the drug's development is also noteworthy. As a 2-substituted benzimidazole drug, it was first introduced in 1962 and quickly became the preferred treatment for a range of nematode infections, particularly in the treatment of strongyluria. However, Thiabendazole is not without side effects, and it may have adverse effects on the central nervous system and potentially exhibit liver toxicity, as detailed in Smith and Leonard's "Pharmacology" (1992 edition, page 919). Despite Thiabendazole's former prominence in the treatment of intestinal threadworms and strong linear worm infections, its status has been challenged in recent years with the emergence of more tolerant drugs. In particular, the potential for liver damage, while rare but potentially serious, has accelerated the development and application of alternative drugs. As for the mechanism of action of Thiabendazole, while it is not yet fully understood, studies have shown that it can inhibit the parasite-specific mitochondrial enzyme succinate dehydrogenase, thereby disrupting the citric acid cycle, mitochondrial respiration, and ATP production, ultimately leading to the death of the parasite. Additionally, Thiabendazole is thought to inhibit microtubule polymerization by binding to β-tubulin, thereby exerting ovicidal effects on certain nematodes. These findings provide valuable insights into the pharmacological action of Thiabendazole.More

Biapenem

CAS No: 120410-24-4

Formula: C15H18N4O4S

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Off-White SolidBiapenem was introduced in Japan as a parenteral treatment for bacterial infections. This new 1-β-methylcarbapenem can be prepared by reaction of commercially available 4-nitrobenzyl protected β-methylcarbapenem enolphosphate with mercapto bicyclotriazolium chloride, obtained in 11 steps starting from hydrazine, followed by deprotection of the carboxylic acid function.More

Vincristine sulfate

CAS No: 2068-78-2

Formula: C46H56N4O10.H2O4S

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Vincristine sulfate is an antitumor vinca alkaloid which inhibits microtubule formation in mitotic spindle, resulting in an arrest of dividing cells at the metaphase stage. It binds to microtubule with a Ki of 85 nM. More

(±)-Trimebutine

CAS No: 39133-31-8

Formula: C22H29NO5

Categories: Active Pharmaceutical Ingredients > Anesthetic Agents

Trimebutine is a drug with antimuscarinic and weak mu opioid agonist effects.Target: Opioid ReceptorTrimebutine is an agonist of peripheral mu, kappa and delta opiate receptors, used as spasmolytic agent for treatment of both acute and chronic abdominal pain [1]. The major product from drug metabolism of trimebutine in human beings is nor-trimebutine, which comes from removal of one of the methyl groups attached to nitrogen. Trimebutine exerts its effects in part due to causing a prematuMore

Daunorubicin

CAS No: 20830-81-3

Formula: C27H29NO10

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Daunorubicin is a topoisomerase II inhibitor. More

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Perindopril

CAS No: 82834-16-0

Formula: C19H32N2O5

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Perindopril is a long-acting ACE inhibitor of which is used to treat high blood pressure, heart failure or stable coronary artery disease.Target: ACEPerindopril is a long-acting ACE inhibitor. It is used to treat high blood pressure, heart failure or stable coronary artery disease in form of perindopril arginine (trade names include Coversyl, Coversum) or perindopril erbumine (trade name Aceon). According to the Australian government's Pharmaceutical Benefits Scheme website, based on datMore

Thiamphenicol

CAS No: 15318-45-3

Formula: C12H15Cl2NO5S

Categories: Active Pharmaceutical Ingredients > Antibiotics

White to off-white crystalline powder or crystal. Melting point (℃) 178-180 (swirled), 164-166 (right-handed). Off-White SolidThiamphenicol is a broad-spectrum antibiotic chloramphenicol, which is more effective to the gram-negative bacteria than the gram-positive bacteria. At room temperature, it is a white to off-white crystalline powder or crystal, which can be quickly and completely absorped by oral adminstration, as well as it is excreted mainly in the prototype from the urine for metaboMore

Metoclopramide

CAS No: 364-62-5

Formula: C14H22ClN3O2

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

Metoclopramide is a dopamine D2 antagonist that is used as an antiemetic.IC50 Value:Target: D2 ReceptorMetoclopramide is a dopamine receptor antagonist which has been used for treatment of a variety of gastrointestinal symptoms over the last thirty years. In various countries, metoclopramide is the antiemetic drug of choice in pregnant women. Findings provide reassurance regarding the safety of metoclopramide for the fetus when the drug is given to women to relieve nausea and vomiting duMore

Zolmitriptan

CAS No: 139264-17-8

Formula: C16H21N3O2

Categories: Active Pharmaceutical Ingredients > Antipyretic Analgesics

White Crystalline PowderZolmitriptan is a selective serotonin receptor agonist of the 1B and 1D subtypes. It is mainly used in the acute treatment of migraine attacks with or without aura and cluster headaches. Zolmitriptan takes effect through binding to human 5-HT1Band 5-HT1Dreceptors, leading to cranial blood vessel constriction and the release of sensory neuropeptides through nerve endings in the trigeminal system.  Zolmitriptan, the second triptan marketed (approved in1997), has a much beMore

Furazolidone

CAS No: 67-45-8

Formula: C8H7N3O5

Categories: Active Pharmaceutical Ingredients > Nitro Compounds

Furazolidone is a nitrofuran derivative with antiprotozoal and antibacterial activity, inhibits AML1-ETO transformed cells with IC50 value of 12.7 μM.Target: Antibacterial Furazolidone is a novel therapeutic strategy in AML patients. Furazolidone can Inhibit the bone-marrow transformation mediated by a series of leukemia fusion proteins. Furazolidone significantly inhibits proliferation of AML cell lines. Furazolidone induces apoptosis of the AML leukemic cells treatment with FurazolidonMore

Afatinib

CAS No: 850140-72-6

Formula: C24H25ClFN5O3

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Afatinib (BIBW 2992) is an irreversible EGFR family inhibitor with IC50s of 0.5 nM, 0.4 nM, 10 nM and 14 nM for EGFRwt, EGFRL858R, EGFRL858R/T790M and HER2, respectively. More

Minocycline

CAS No: 10118-90-8

Formula: C23H27N3O7

Categories: Active Pharmaceutical Ingredients > Antibiotics

ChEBI: A tetracycline analogue having a dimethylamino group at position 7 and lacking the methyl and hydroxy groups at position 5.Minocycline belongs to the class of medications called tetracycline antibiotics, who has a broader spectrum than the other members of the group. Identified as a long-acting type, it is used to treat infections induced by certain kinds of bacteria. Minocycline is commonly used in the treatment of skin infections, such as inflammatory lesions of non-nodular moderate-toMore

Active Pharmaceutical Ingredients Market

Market report will help you efficiently source API chemicals! ECHEMI can provide export and import data of API products you need to monitor and analyze the API market!
  • Phytosterol:

    40.0Yuan/kg -

Frequently Asked Questions

Are APIs safe to store and transport?

APIs must be handled according to regulatory and safety guidelines. Proper storage conditions, protective equipment, and transportation protocols are required to maintain stability and prevent contamination or hazards.

What industries use APIs?

APIs are widely used in pharmaceutical, veterinary, nutraceutical, and chemical research industries. They are essential for manufacturing medications, supplements, and experimental formulations.

How can I buy active pharmaceutical ingredients in bulk?

You can find certified API manufacturers and traders on ECHEMI. They provide detailed product information, CAS numbers, and safety data sheets (SDS) to ensure safe and reliable bulk purchases.

What are the top selling APIs on ECHEMI?

The top selling APIs on ECHEMI include Veterinary Raw Materials, Anesthetic Agents, Antiallergic Drugs, Feed Additives, Hormones and Endocrine Drugs, Digestive System Drugs, Vitamins and Minerals, Synthetic Anti-infective Drugs, Respiratory Drugs, and other chemical drugs.

What are active pharmaceutical ingredients?

Active Pharmaceutical Ingredients, also known as APIs, are the main active ingredients in a pharmaceutical drug to provide the intended therapeutic effect. APIs can be chemically synthesized or obtained from natural sources like plants and animals. After identifying the API, it is combined with other inactive ingredients to create a drug product that can be taken in different forms, such as tablets, capsules or injections.

What are the most common active pharmaceutical ingredients?

Here are some examples of common API chemicals.

1) Paracetamol (Acetaminophen) - a pain reliever and fever reducer

2) Ibuprofen - a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, fever, and inflammation

3) Aspirin - a medication used to reduce pain, fever, and inflammation and also used as a blood thinner

4) Amoxicillin - an antibiotic used to treat bacterial infections

5) Metformin - an oral medication for type 2 diabetes that lowers blood sugar levels

6) Omeprazole - a proton-pump inhibitor (PPI) used to reduce stomach acid production

7) Atorvastatin - a medication used to lower cholesterol levels in the blood

8) Sertraline - an antidepressant medication belonging to the class of selective serotonin reuptake inhibitors (SSRIs)

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