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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 744 qualified manufacturers and 393 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.
4850 Active Pharmaceutical Ingredients items

Velpatasvir

CAS No: 1377049-84-7

Formula: C49H54N8O8

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

ChEBI: A complex organic heteropentacyclic compound that is a hepatitis C virus nonstructural protein 5A inhibitor used in combination with sofosbuvir (under the brand name Epclusa) for treatment of patients with chronic hepatitis C of all six major genotypes.More

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

Bambuterol

CAS No: 81732-65-2

Formula: C18H29N3O5

Categories: Active Pharmaceutical Ingredients > Amides

Bambuterol is a long acting beta-adrenoceptor agonist (LABA) used in the treatment of asthma; it also is a prodrug of terbutaline.IC50 value:Target: beta-adrenoceptor agonistBambuterol is contraindicated in pregnancy and in people with seriously impaired liver function. It can be used by people with renal impairment, but dose adjustments are necessary. The adverse effect profile of bambuterol is similar to that of salbutamol, and may include fatigue, nausea, palpitations, headache, dizziMore

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

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Allylestrenol

CAS No: 432-60-0

Formula: C21H32O

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Allylestrenol, a synthetic sexualsteroid, is used worldwide in case of endangered pregnancies. More

Prostaglandin E2

CAS No: 363-24-6

Formula: C20H32O5

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Prostaglandin E2 is a hormone-like substance that participate in a wide range of body functions such as the contraction and relaxation of smooth muscle, the dilation and constriction of blood vessels, control of blood pressure, and modulation of inflammation. More

Amorolfine

CAS No: 67467-83-8

Formula: C21H35NO

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Broad-spectrum and highly effective antifungal drugsMore

Ticlopidine

CAS No: 55142-85-3

Formula: C14H14ClNS

Categories: Active Pharmaceutical Ingredients > Blood System Drugs

ChEBI: A thienopyridine that is 4,5,6,7-tetrahydrothieno[3,2-c]pyridine in which the hydrogen attached to the nitrogen is replaced by an o-chlorobenzyl group.More

Tizanidine

CAS No: 51322-75-9

Formula: C9H8ClN5S

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

Tizanidine is an α2-adrenergic receptor agonist and inhibits neurotransmitter release from CNS noradrenergic neurons.Target: α2-adrenergic receptorTizanidine is a drug that is used as a muscle relaxant. It is a centrally acting α2 adrenergic agonist. It is used to treat the spasms, cramping, and tightness of muscles caused by medical problems such as multiple sclerosis, ALS, spastic diplegia, back pain, or certain other injuries to the spine or central nervous system. It is also prescribMore

Ulipristal acetate

CAS No: 126784-99-4

Formula: C30H37NO4

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Pale Yellow SolidChEBI: A 20-oxo steroid obtained by acetylation of the 17-hydroxy group of (11beta,17alpha)-17-acetyl-11-[4-(dimethylamino)phenyl]-3-oxoestra-4,9-dien-17-ol (ulipristal). A selective progesterone receptor modulator, which is empl yed as an emergency contraceptive.Ulipristal acetate (UPA) is a selective progesterone receptor modulator. Attributing to its higher efficacy and a similar rate of side effects compared to levonorgestrel emergency contraception, it is now recommendedMore

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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