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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

Manidipine

CAS No: 89226-50-6

Formula: C35H38N4O6

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Manidipine is a calcium channel blocker that is used clinically as an antihypertensive. Target: Calcium ChannelManidipine is a dihydropyridine calcium antagonist, which causes systemic vasodilation by inhibiting the voltage-dependent calcium inward currents in smooth muscle cells. Manidipine was well tolerated in clinical trials, with most adverse effects related to vasodilation [1]. Manidipine is a lipophilic, third-generation dihydropyridine calcium channel antagonist with a high degreMore

(+)-Catharanthine

CAS No: 2468-21-5

Formula: C21H24N2O2

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Catharanthine inhibits nicotinic receptor mediated diaphragm contractions with IC50 of 59.6 μM.Target: nAChRCatharanthine evokes a concentration-dependent attenuation of carbachol responses in the rat ileum preparation, producing rightward curve displacements and decreases in maximal agonist responses. The mixture of serpentine, plus ajmalicine and catharanthine reveals a concentration-dependent inhibitory effect of acethylcholinesterase (AchE), with an IC50 at ca. 2.25 μg/Ml [1]. CatharMore

Enoxacin

CAS No: 74011-58-8

Formula: C15H17FN4O3

Categories: Active Pharmaceutical Ingredients > Inhibitor Drugs

Enoxacin is a broad-spectrum 6-fluoronaphthyridinone antibacterial agent.Target: antibacterialEnoxacin is a new quinolone carboxylic acid compound. Its activity against 740 bacterial isolates was determined. It inhibited 90% Escherichia coli, Klebsiella sp., Aeromonas sp., Enterobacter spp., Serratia spp., Proteus mirabilis, and Morganella morganii at less than or equal to 0.8 micrograms/ml [1]. Daily plasma theophylline concentrations were measured in 14 patients. The mean +/- s.d. theoMore

Cefetamet

CAS No: 65052-63-3

Formula: C14H15N5O5S2

Categories: Active Pharmaceutical Ingredients > Antibiotics

Cefetametis a third-generation cephalosporin antibiotic and the active agent of Cefeamet pivoxil (C242780) after hydrolysis.More

Benserazide

CAS No: 322-35-0

Formula: C10H15N3O5

Categories: Active Pharmaceutical Ingredients > Hydrazine or Hydroxylamine Derivatives

ChEBI: A carbohydrazide that results from the formal condensation of the carboxy group of DL-serine with the primary amino group of 4-(hydrazinylmethyl)benzene-1,2,3-triol. An aromatic-L-amino-acid decarboxylase nhibitor (DOPA decarboxylase inhibitor) that does not enter the central nervous system, it is used as its hydrochloride salt as an adjunct to levodopa in the treatment of parkinsonism. By preventing the conversion of levodopa to dopamine in the periphery, t causes an increase in theMore

3,7,12-Triketo-5β-cholanoic acid

CAS No: 81-23-2

Formula: C24H34O5

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

Dehydrocholic acid is a synthetic bile acid, manufactured by the oxidation of cholic acid. Dehydrocholic acid acts as a hydrocholeretic, increasing bile output to clear increased bile acid load. More

Fluocinonide

CAS No: 356-12-7

Formula: C26H32F2O7

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Fluocinonide (Vanos) is a potent glucocorticoid steroid used topically as anti-inflammatory agent for the treatment of skin disorders.Target: Glucocorticoid ReceptorFluocinonide is a potent glucocorticoid steroid used topically as an anti-inflammatory agent for the treatment of skin disorders such as eczema and seborrhoeic dermatitis. Fluocinonide ranks as a "high-potency" topical corticosteroid. Minimal amounts should be used for a minimal length of time to avoid the occurrence of adverMore

(±)-Sulpiride

CAS No: 15676-16-1

Formula: C15H23N3O4S

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Sulpiride is White Solid Sulpiride is a member of the class of benzamides obtained from formal condensation between the carboxy group of 2-methoxy-5-sulfamoylbenzoic acid and the primary amino group of (1-ethylpyrrolidin-2-yl)methylamine. More

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Chlormadinone

CAS No: 1961-77-9

Formula: C21H27ClO3

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Off-White to Pale Yellow SolidMore

Busulfan

CAS No: 55-98-1

Formula: C6H14O6S2

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Busulfan is a potent alkylator, with chemotherapeutic activity. More

Oils, wintergreen

CAS No: 68917-75-9

Formula:

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Wintergreen essential oil is water steam-distilled from leaves charged into the still and allowed to macerate for several hours to hydrolyze the gaultherin glucoside (methyl salicylate + glucose). Distillation lasts from 5 to 6 hours and yields approximately 0.7% essential oil. The oil is often adulterated by intentionally co-distilling sweet birth (Betula lenta) bark. FCC (1996) has described wintergreen oil as obtained from the leaves of G. procumbens and bark of B. lenta. The oil has a stronMore

Nelarabine

CAS No: 121032-29-9

Formula: C11H15N5O5

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

ChEBI: A purine nucleoside in which O-methylguanine is attached to arabinofuranose via a beta-N9-glycosidic bond. Inhibits DNA synthesis and causes cell death; a prodrug of 9-beta /stereo >-D-arabinofuranosylguanine (ara-G).Nelarabine is a new member of the purine nucleoside antimetabolite class of drugs. It was launched as an intravenous infusion for treating relapsed or refractory T-cell acute lymphoblastic leukemia (T-ALL) and T-cell lymphoblastic lymphoma (T-LBL) after at least two prioMore

Entacapone

CAS No: 130929-57-6

Formula: C14H15N3O5

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Entacapone is a specific, potent, peripherally acting catechol-O-methyltransferase (COMT) inhibitor with IC50 of 151 nM for PD treatment.IC50 Value: 151 nMTarget: COMTin vitro: Entacapone inhibits catechol-O-methyltransferase(COMT) with similar IC50 in different tissues including live, duodenum, kidney and lung, but entacapone is more active than tolcapone in those tissues. Entacapone (< 100 μM) is a potent inhibitor of α-syn and β-amyloid (Aβ) oligomerization and fibrillogenesis, and alMore

Rotundine

CAS No: 10097-84-4

Formula: C21H25NO4

Categories: Active Pharmaceutical Ingredients > Antipyretic Analgesics

Used as an analgesic, suitable for headache, dysmenorrhea and labor pain relief of gastrointestinal tract and hepatobiliary system caused by medical diseasesMore

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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