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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

Phenytoin sodium

CAS No: 630-93-3

Formula: C15H12N2O2.Na

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Phenytoin sodium is an inactive voltage-gated sodium channel stabilizer.Target: Sodium ChannelPhenytoin sodium is an antiepileptic drug. It is useful to treat partial seizures and generalized tonic-clonic seizures but not primary generalized seizures such as absence seizures or myoclonic seizures. Phenytoin is believed to protect against seizures by causing voltage-dependent block of voltage-gated sodium channels [1]. Phenytoin has low affinity for resting sodium channels at hyperpolarizMore

Acetylcholine

CAS No: 51-84-3

Formula: C7H16NO2

Categories: Active Pharmaceutical Ingredients > Amides

SolidMore

Sulfathiazole

CAS No: 72-14-0

Formula: C9H9N3O2S2

Categories: Active Pharmaceutical Ingredients > Amides

Sulfathiazole is an organosulfur compound that has been used as a short-acting sulfa drug.Target: AntibacterialSulfathiazole (20 μg/L) starts to be degraded between day 31 and day 38 in one of the two batch reactors containing different wastewater matrices. Sulfathiazole is degraded at a substantially faster rate than sulfamethoxazole or sulfamethazine in the nitrification process (S3) [1]. Recovery from spiked manure slurry samples is 64% for Sulfathiazole at pH 9. Sulfathiazole has aciMore

Dyclonine

CAS No: 586-60-7

Formula: C18H27NO2

Categories: Active Pharmaceutical Ingredients > Anesthetic Agents

ChEBI: N-Ethylpiperidine in which one of the hydrogens attached to the methyl group is substituted by a 4-butoxybenzoyl group.More

Sucralfate

CAS No: 54182-58-0

Formula: C12H54Al16O75S8

Categories: Active Pharmaceutical Ingredients > Skin Conditioning

Sucralfate is a cytoprotective agent which has been employed for prevention and treatment of several gastrointestinal diseases. More

4,10-Dihydro-3,7,8-trihydroxy-3-methyl-10-oxo-1H,3H-pyrano[4,3-b][1]benzopyran-9-carboxylic acid

CAS No: 479-66-3

Formula: C14H12O8

Categories: Active Pharmaceutical Ingredients > Skin Conditioning

Fulvic acids refer to collectively of a set of organic acids, natural compounds, and components of the humus [which is a fraction of soil organic matter].
[1]
They share similar structure with humic acids, with differences being the carbon and oxygen contents, acidity, and degree of polymerization, molecular weight, and color.
[2]
Fulvic acid remains in solution after removal of humic acid from humin by acidification
[3, 4]
. Humic and fulvic acids are mainly produced More

Albuterol sulfate

CAS No: 51022-70-9

Formula: C13H23NO7S

Categories: Active Pharmaceutical Ingredients > Respiratory Drugs

Salbutamol Hemisulfate is a short-acting β2 adrenergic receptor agonistTarget: β2 Adrenergic ReceptorSalbutamol is a short-acting, selective beta2-adrenergic receptor agonist used in the treatment of asthma and COPD. All the effects of R,S-salbutamol on guinea-pig skeletal muscles are due to the activity of the R-enantiomer. Thus there is a common enantiomeric profile for the skeletal muscle and bronchorelaxant activity of the compound [1]. Short-term Salbutamol intake did appear to imprMore

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Buflomedil hydrochloride

CAS No: 35543-24-9

Formula: C17H25NO4.ClH

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Buflomedil HCl is a vasodilator used to treat claudication or the symptoms of peripheral arterial disease.Target: OthersBuflomedil is a vasoactive drug used to treat claudication or the symptoms of peripheral arterial disease. In the EU, buflomedil, a vasoactive agent, was indicated for treatment of PAOD symptoms, specifically in patients with stage II PAOD who experience severe pain when walking even relatively short distances. Buflomedil is not currently approved by the US Food and DruMore

1,3,5-Triazine-2,4-diamine

CAS No: 504-08-5

Formula: C3H5N5

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

(+)-2-Heptanol

CAS No: 6033-23-4

Formula: C7H16O

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

Colorless to light yellow liquiMore

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

Methylene blue trihydrate

CAS No: 7220-79-3

Formula: C16H18N3S.Cl.3H2O

Categories: Active Pharmaceutical Ingredients > Specialty Drugs

Methylene blue trihydrate (C.I. Basic Blue 9 trihydrate) is a guanylyl cyclase (sGC), monoamine oxidase A (MAO-A) and NO synthase (NOS) inhibitor. Methylene blue trihydrate is a vasopressor and is often used as a dye in several medical procedures. Methylene blue trihydrate has antinociception, antimalarial, antidepressant and anxiolytic activity effects. Methylene Blue trihydrate has the potential for methemoglobinemias, neurodegenerative disorders and ifosfamide-induced encephalopathytrMore

Pazufloxacin

CAS No: 127045-41-4

Formula: C16H15FN2O4

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Pazufloxacin is a fluoroquinolone with a 1-aminocyclopropyl substituent at C10 position. The presence of aminoacyl group at C-10 is a unique feature of the molecule imparting potent broad spectrum activity against gram-positive and gram-negative bacteria. This activity is based on the inhibition of bacterial DNA gyrase.More

Ertapenem

CAS No: 153832-46-3

Formula: C22H25N3O7S

Categories: Active Pharmaceutical Ingredients > Antibiotics

ChEBI: Meropenem in which the one of the two methyl groups attached to the amide nitrogen is replaced by hydrogen while the other is replaced by a 3-carboxyphenyl group. The sodium salt is used for the treatment of moderate to severe susceptible infections includ ng intra-abdominal and acute gynaecological infections, pneumonia, and infections of the skin and of the urinary tract.Ertapenem (Invanz, for injection) is a synthetic 1-β-methylcarbapenem that is structurally related to β-lactam antMore

Methocarbamol

CAS No: 532-03-6

Formula: C11H15NO5

Categories: Active Pharmaceutical Ingredients > Antipyretic Analgesics

Methocarbamol is a central muscle relaxant used to treat skeletal muscle spasms.Target: Carbonic AnhydraseMethocarbamol is the carbamate of guaifenesin, but does not produce guaifenesin as a metabolite, because the carbamate bond is not hydrolyzed metabolically; metabolism is by Phase I ring hydroxylation and O-demethylation, followed by Phase II conjugation. All the major metabolites are unhydrolyzed carbamates. Methocarbamol is used as an adjunct in the symptomatic treatment of musculoMore

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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