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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

Esomeprazole magnesium

CAS No: 161973-10-0

Formula: C34H36MgN6O6S2

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

ChEBI: A magnesium salt resulting from the formal reaction of magnesium hydroxide with 2 mol eq. of esomeprazole. An inhibitor of gastric acid secretion, it is used for the treatment of gastro-oesophageal reflux disease, dyspepsia, peptic ulcer disease, and Zolli ger-Ellison syndrome.Esomeprazole magnesium,S-bis(5-rnethoxy-2-[(S)-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole-l-yl) magnesiumtrihydrate (Nexium), is the S-enantiomer ofomeprazole. The benzimidazole PPIs coMore

Everolimus

CAS No: 159351-69-6

Formula: C53H83NO14

Categories: Active Pharmaceutical Ingredients > Drugs Influencing Immune Function

Off White SolidChEBI: A macrocyclic lactone that is rapamycin in which the hydroxy group attached to the cyclohexyl moiety has been converted to the corresponding 2-hydroxyethyl ether. It is an immunosuppressant and antineoplastic agent.Everolimus, an oral immunosuppressant for the treatment of kidney and heart transplant rejection, is the 40-O-(2-hydroxyethyl) derivative of rapamycin. It has immunosuppressive properties similar to those of rapamycin, but with improved pharmacokinetic profilMore

Tetramethylpyrazine

CAS No: 1124-11-4

Formula: C8H12N2

Categories: Active Pharmaceutical Ingredients > Perfuming

white crystals or powder 2,3,5,6-Tetramethylpyrazine has musty, fermented, coffee odorChEBI: A member of the class of pyrazines that is pyrazine in which all four hydrogens have been replaced by methyl groups. An alkaloid extracted from Chuanxiong (Ligusticum wallichii).Tetramethylpyrazine (TMP) is a kind of alkaloids identified in Ligusticum wallichii FRANCH. It has various kinds of medical applications. It has long been used in China for the treatment of cardiovascular problems. It also hasMore

Ziprasidone

CAS No: 146939-27-7

Formula: C21H21ClN4OS

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Ziprasidone(CP88059) is a combined 5-HT (serotonin) and dopamine receptor antagonist which exhibits potent effects of antipsychotic activity.IC50 value:Target: 5-HT receptor; Dopamine receptorZiprasidone possesses an in vitro 5-HT2A/dopamine D2 receptor affinity ratio higher than any clinically available antipsychotic agent. In vivo, ziprasidone antagonizes 5-HT2A receptor-induced head twitch with 6-fold higher potency than for blockade of d-amphetamine-induced hyperactivity, a measure oMore

Amifostine

CAS No: 20537-88-6

Formula: C5H15N2O3PS

Categories: Active Pharmaceutical Ingredients > Specialty Drugs

Amifostine is a broad-spectrum cytoprotection agent against the DNA damaging effects of ionizing radiation and chemotherapy drug. More

Escitalopram oxalate

CAS No: 219861-08-2

Formula: C20H21FN2O.C2H2O4

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Escitalopram is a selective serotonin reuptake inhibitor (SSRI) with Ki of 0.89 nM.Target: SSRIsEscitalopram, the S-enantiomer of citalopram, belongs to a class of antidepressant agents known as selective serotonin-reuptake inhibitors (SSRIs). Escitalopram may be used to treat major depressive disorder (MDD) and generalized anxiety disorder (GAD). Escitalopram has no significant affinity for adrenergic (alpha1, alpha2, beta), cholinergic, GABA, dopaminergic, histaminergic, serotonergic (More

PHENOLPHTHALEIN

CAS No: 5768-87-6

Formula: C20H14O4

Categories: Active Pharmaceutical Ingredients > Inhibitor Drugs

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Prilocaine

CAS No: 721-50-6

Formula: C13H20N2O

Categories: Active Pharmaceutical Ingredients > Amides

It is a kind of needle-like crystals with the melting point being 37-38 ℃ and the boiling point being 159-162 ℃ (0.133kPa), and refractive index (nD20) being 1.5299. Its hydrochloride ([1786-81-8]) is a white crystalline powder. The Melting point is 167-168 ℃. It is soluble in water and ethanol, slightly soluble in chloroform. It has sour taste and bitter taste and is odorless. White or almost white, crystalline powder.More

Hydroxychloroquine

CAS No: 118-42-3

Formula: C18H26ClN3O

Categories: Active Pharmaceutical Ingredients > Antiparasitic Drugs

ChEBI: An aminoquinoline that is chloroquine in which one of the N-ethyl groups is hydroxylated at position 2. An antimalarial with properties similar to chloroquine that acts against erythrocytic forms of malarial parasites, it is mainly used s the sulfate salt for the treatment of lupus erythematosus, rheumatoid arthritis, and light-sensitive skin eruptions.More

(+)-Griseofulvin

CAS No: 126-07-8

Formula: C17H17ClO6

Categories: Active Pharmaceutical Ingredients > Antibiotics

It is white or white-like powder. Melting point is 218-224 °C. It is highly soluble in tetrachloroethane, soluble in acetone or chloroform, slightly soluble in methanol or ethanol, and very slightly soluble in water. It is odorless or almost odorless with slightly bitter taste. It is stable to heat. Crystalline SolidChEBI: An oxaspiro compound produced by Penicillium griseofulvum. It is used by mouth as an antifungal drug for infections involving the scalp, hair, nails and skin that do not resMore

Tamsulosin hydrochloride

CAS No: 106463-17-6

Formula: C20H28N2O5S.ClH

Categories: Active Pharmaceutical Ingredients > Urinary System Drugs

White to Off-White SolidTamsulosin hydrochloride is the hydrochloride form of Tamsulosin (Trade name: Alna ® / Flomax ®). It is a kind of medication used for the treatment of symptomatic benign prostatic hyperplasia (BPH), boosting the passage of kidney stones. It can also be used for the treatment of acute urinary retention. It is a kind of selective antagonist of alpha-1A and alpha-1B-adrenoceptros located in prostate, prostatic capsule, prostatic urethra, and bladder neck. The blockage of thMore

Saxagliptin

CAS No: 361442-04-8

Formula: C18H25N3O2

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Saxagliptin(BMS477118) is a selective and reversible DPP4 inhibitor with IC50 of 26 nM and Ki of 1.3 nM.IC50 value: 26 nM [1]Target: DPP4in vitro: Saxagliptin has an inhibition constant Ki of 1.3 nM for DPP4 inhibition, which is 10-fold more potent than either vildagliptin or sitagliptin (another two DPP4 inhibitors) with Ki of 13 and 18 nM. In addition, Saxagliptin demonstrates greater specificity for DPP4 than for either the DPP8 or DPP9 enzymes (400- and 75- fold, respectively). The aMore

Cetrorelix

CAS No: 120287-85-6

Formula: C70H92ClN17O14

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

ChEBI: A synthetic ten-membered oligopeptide comprising N-acetyl-3-(naphthalen-2-yl)-D-alanyl, 4-chloro-D-phenylalanyl, 3-(pyridin-3-yl)-D-alanyl, L-seryl, L-t rosyl, N5-carbamoyl-D-ornithyl, L-leucyl, L-arginyl, L-prolyl, and D-alaninamide residues coupled in sequence. A gonadotrophin-releasing hormone (GnRH antagonist, it is used for treatment of infertility and of hormone-sensitive cancers of the prostate and breast.More

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:

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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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