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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.
4835 Active Pharmaceutical Ingredients items

Trifluridine

CAS No: 70-00-8

Formula: C10H11F3N2O5

Categories: Active Pharmaceutical Ingredients > Saccharides

Trifluridine is an irreversible thymidylate synthase inhibitor, and thereby suppresses DNA synthesis. Trifluridine is an antiviral drug for herpes simplex virus (HSV) infection. More

Ethanethiol

CAS No: 6982-46-3

Formula: C2H6S

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

Benzenepropanol

CAS No: 122-97-4

Formula: C9H12O

Categories: Active Pharmaceutical Ingredients > Dissolving Agent

CLEAR COLOURLESS LIQUID 3-Phenyl-1-propanol occurs both in free and esterified forms in resins and balsams (e.g., benzoe resin and Peru balsam). It has been identified in fruits and cinnamon. Hydrocinnamic alcohol is a slightly viscous, colorless liquid with a floralbalsamic odor, slightly reminiscent of hyacinths. Esterification with aliphatic carboxylic acids is important because it leads to additional fragrance and flavor materials.More

5-Iodo-2′-deoxyuridine

CAS No: 54-42-2

Formula: C9H11IN2O5

Categories: Active Pharmaceutical Ingredients > Saccharides

Idoxuridine is an antiviral agent for feline herpesvirus type-1 with IC50 of 4.3 μM.Target: herpesvirus type-1Idoxuridine is mainly used topically to treat herpes simplex keratitis. Epithelial lesions, especially initial attacks presenting with a dendritic ulcer, are most responsive to therapy, while infection with stromal involvement are less responsive. Idoxuridine is ineffective against herpes simplex virus type 2 and varicella-zoster. More

Nitrendipine

CAS No: 39562-70-4

Formula: C18H20N2O6

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Nitrendipine is a calcium channel blocker with marked vasodilator action.Target: Calcium ChannelNitrendipine is a dihydropyridine calcium channel blocker. It is used in the treatment of primary hypertension to decrease blood pressure. Nitrendipine blocked Ca2+ currents very potently, with half-block by subnanomolar concentrations. The concentration dependence of block had the form expected for 1:1 binding, with an apparent dissociation constant (Kd) of 0.36 nM. In contrast, when cells weMore

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Lomustine

CAS No: 13010-47-4

Formula: C9H16ClN3O2

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Lomustine is a pale yellow powder. ChEBI: An N-nitrosourea that is urea in which one of the nitrogens is substituted by a 2-chloroethyl group and by a nitroso group, while the other nitrogen is substituted by a cyclohexyl group. An alkylating antineoplastic agent, it is used in he treatment of brain tumours, lung cancer, malignant melanoma and other solid tumours.Lomustine is available in 10-, 40-, and 100-mg capsules fororal administration in the treatment of primary and metastaticbrain canMore

Ethyl ferulate

CAS No: 4046-02-0

Formula: C12H14O4

Categories: Active Pharmaceutical Ingredients > Antioxidant Ingredient

Ethyl ferulate, a naturally lipophilic derivative of ferulic acid originally derived from giant fennel (F. communis), induces heme oxygenase-1 (HO-1) and protects rat neurons against oxidative stress[1]. Ethyl ferulate also protects neurons against amyloid β peptide (1-42)-induced oxidative stress and neurotoxicity[2]. More

Raltitrexed

CAS No: 112887-68-0

Formula: C21H22N4O6S

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Yellow Crystalline PowderTomudex was launched in Ireland, France, Luxembourg and the UK for advanced colorectal cancer and it was prepared in a convergent manner (6 steps) from diethyl L-glutamate and 6-bromomethyi-2-methyl-quinazolin4(3H)-one. Tomudex is a highly selective inhibitor of thymidylate synthase (TS), the key enzyme in the biochemical conversion of dUMP to dTMP. It enters the cell via the reduced folatefmethotrexate cell membrane carrier and is converted to the polyglutamate sMore

Naftopidil

CAS No: 57149-07-2

Formula: C24H28N2O3

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Naftopidil (Flivas), a selective α1-adrenergic receptor antagonist or alpha blocker, is an antihypertensive drug.Target: α1-Adrenergic ReceptorNaftopidil significantly improved the overall international prostatic symptom score ; from 19.2±7.9 to 11.7±5.8 in the M group and from 19.4±6.4 to 12.3±6.8 in the E group (p<0.0001), QOL score from 4.9±0.8 to 3.2±1.4 in the M group and from 5.0±0.8 to 3.6±1.3 in the E group (p<0.0001), and OAB symptom score from 7.8±2.6 to 5.0±2.5 in the M groupMore

Vasopressin

CAS No: 11000-17-2

Formula:

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Vasopressin is used in veterinary medicine as a diagnostic agent and in the treatment of diabetes insipidus in small animals. In recent years, there has been significant interest in using vasopressin for treating shock syndromes in humans and animals. Ongoing research is being conducted.
In human medicine, vasopressin has been used to treat acute GI hemorrhage and to stimulate GI peristalsis. Vasopressin CRI is also being used for treatment of hypotensive septic patients unresponsivMore

Nefiracetam

CAS No: 77191-36-7

Formula: C14H18N2O2

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Nefiracetam is a GABAergic, cholinergic, and monoaminergic neuronal systems enhancer for Ro 5-4864-induced convulsions.Target: GABA ReceptorNefiracetam induces a short-term depression of ACh-evoked currents at submicromolar concentrations (0.01-0.1 μM) and a long-term enhancement of the currents at micromolar concentrations (1-10 μM). Nefiracetam interacts with PKA and PKC pathways, which may explain a cellular mechanism for the action of cognition-enhancing agents. Lower (submicromolar)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:

    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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