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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

Cilnidipine

CAS No: 132203-70-4

Formula: C27H28N2O7

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Yellow Crystalline SolidChEBI: A diesterified 1,4-dihydropyridine-3,5-dicarboxylic acid. A calcium channel blocker, it is used as an antihypertensive.Clinidipine is a kind of calcium channel blocker. It is a kind of novel calcium antagonist with the blocking effect on both L-type and N-type calcium channels. It is mainly used for the treatment of hypertension. Based on its effect on both N-type and L-type calcium channel, it can dilate both arterioles and venules, further reducing the pressureMore

Doxifluridine

CAS No: 3094-09-5

Formula: C9H11FN2O5

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Doxifluridine(Ro 21-9738; 5'-DFUR) is a thymidine phosphorylase activator for PC9-DPE2 cells with IC50 of 0.62 μM. IC50 value: 0.62 μM(PC9-DPE2 cell).Target: Nucleoside antimetabolite/analogDoxifluridine is a fluoropyrimidine derivative and oral prodrug of the antineoplastic agent 5-fluorouracil (5-FU) with antitumor activity. Doxifluridine, designed to circumvent the rapid degradation of 5-FU by dihydropyrimidine dehydrogenase in the gut wall, is converted into 5-FU in the presence of pMore

4,4′-(1,4-Phenylenedi-2,1-ethenediyl)bis[benzonitrile]

CAS No: 13001-40-6

Formula: C24H16N2

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

solidMore

Vortioxetine

CAS No: 508233-74-7

Formula: C18H22N2S

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Vortioxetine is a inhibitor of 5-HT1A, 5-HT1B, 5-HT3A, 5-HT7 receptor and SERT, with Ki values of 15 nM, 33 nM, 3.7 nM, 19 nM and 1.6 nM, respectively. More

Ketoprofen

CAS No: 22071-15-4

Formula: C16H14O3

Categories: Active Pharmaceutical Ingredients > Antipyretic Analgesics

Ketoprofen is a non-steroidal antiinflammatory agent, acting as a potent inhibitor of COX, with IC50s of 2 nM and 26 nM for COX-1 and COX-2 in human blood monocytes, respectively. More

Oxybutynin

CAS No: 5633-20-5

Formula: C22H31NO3

Categories: Active Pharmaceutical Ingredients > Urinary System Drugs

Oxybutynin is an anticholinergic medication used to relieve urinary and bladder difficulties.Target: mAChROxybutynin is an anticholinergic medication used to relieve urinary and bladder difficulties, including frequent urination and inability to control urination (urge incontinence), by decreasing muscle spasms of the bladder. Oxybutynin competitively antagonizes the M1, M2, and M3 subtypes of the muscarinic acetylcholine receptor. It also has direct spasmolytic effects on bladder smoothMore

Isoproterenol

CAS No: 7683-59-2

Formula: C11H17NO3

Categories: Active Pharmaceutical Ingredients > Respiratory Drugs

ChEBI: A secondary amino compound that is noradrenaline in which one of the hydrogens attached to the nitrogen is replaced by an isopropyl group. A sympathomimetic acting almost exclusively on beta-adrenergic receptors, it is used (mainly as the hy rochloride salt) as a bronghodilator and heart stimulant for the management of a variety of cardiac disorders.More

Thalidomide

CAS No: 50-35-1

Formula: C13H10N2O4

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Thalidomide is initially promoted as a sedative, inhibits ereblon (CRBN), a part of the cullin-4 E3 ubiquitin ligase complex CUL4-RBX1-DDB1, with a Kd of ∼250 nM, and has immunomodulatory, anti-inflammatory and anti-angiogenic cancer properties. More

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Fish oil

CAS No: 8016-13-5

Formula:

Categories: Active Pharmaceutical Ingredients > Skin Conditioning

A drying oil obtained chiefly from menhaden, pilchard, sardine, and herring. Extracted from the entire body of the fish by cooking and compressing. Should not be confused with fish-liver oil. It contains approximately 20% polyunsaturated fatty acids, whicMore

Squalene

CAS No: 7683-64-9

Formula: C30H50

Categories: Active Pharmaceutical Ingredients > Vitamins and Minerals Medicines

squalene: An intermediate compoundformed in the synthesis ofcholesterol; it is a hydrocarbon containing30 carbon atoms. The immediateoxidation of squalene tosqualene 2,3-epoxide is the last commonstep in the synthesis of sterolsin animals, plants, and fungi.More

Asenapine

CAS No: 65576-45-6

Formula: C17H16ClNO

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Asenapine(Org 5222) inhibits adrenergic receptor (α1, α2A, α2B, α2C) with Ki of 0.25-1.2 nM and also inhibits 5-HT receptor (1A, 1B, 2A, 2B, 2C, 5A, 6, 7) with Ki of 0.03-4.0 nM. IC50 Value: 0.25-1.2 nM(Ki for adrenergic receptor); 0.03-4.0 nM(Ki for 5-HT receptor)Target: 5-HT Receptor; Adrenergic ReceptorAsenapine maleate is a 5-HT receptor antagonist (5-HT1A,1B, 5-HT2A, 2B, 2C, 5-HT5A, 5-HT6 and 5-HT7), a D2 antagonist, and an antipsychotic. Asenapine has a broad receptor affinity profMore

Prulifloxacin

CAS No: 123447-62-1

Formula: C21H20FN3O6S

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Off-White SolidPrulifloxacin was launched as the third fluoroquinone. It was introduced in Japan as an oral treatment for urinary tract infections (UTls), respiratory tract infections (RTls) and bacterial pneumoniae. It can be synthesized in 10 steps from commercially available 3,4-difluoroaniline. Key steps involve the cyclization of 6,7-difluoro-rl-hydroxy-2- thioquinoline-3carboxylic acid ethyl ester with 1 ,I-dibromomethane to give the corresponding thiazeto-[3,2a]quinoline. Aromatic nMore

Cefpodoxime proxetil

CAS No: 87239-81-4

Formula: C21H27N5O9S2

Categories: Active Pharmaceutical Ingredients > Antibiotics

Cefpodoxime Proxetil is a first oral and broad spectrum antibiotic that belongs to the third generation of cephalosporin. Cefpodoxime Proxetil binds to penicillin binding proteins (PBPs), which inhibits peptidoglycan synthesis, finally results in interfering bacterial cell wall biosynthesis[1]. More

Tulathromycin A

CAS No: 217500-96-4

Formula: C41H79N3O12

Categories: Active Pharmaceutical Ingredients > Antibiotics

Tulathromycin A is a macrolide antibiotic.IC50 Value: 1 microg/ml (MIC90 for Pasteurella multocida) [2]Target: Antibacterialin vitro: Two highly pathogenic strains of M. bovis (with minimum inhibitory concentration values for tulathromycin of 1 and >64 microg/ml) were inoculated into 145 calves. Four days after inoculation, calves with clinical BRD were treated subcutaneously with saline or tulathromycin (2.5 mg/kg). Compared with saline, BRD-related withdrawals, peak rectal temperaturesMore

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!
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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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