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Anti-Vomiting drug during chemotherapy Dose and usage Side effects Uses
Aprepitant structure
Chemical Name:
Emend;CS-274;MK-0869;ONO 7436;aprepitant;Aprepirant;Aprepitant, >=99%;Aprepitant(MK-0869);mk 0869 Aprepitant;Aprepitant (MK-0869, L-754030)
Molecular Formula:
Formula Weight:
MOL File:

Aprepitant Properties

Melting point:
D25 +69° (c = 1.00 in methanol)
1.51±0.1 g/cm3(Predicted)
storage temp. 
-20°C Freezer
white to beige
optical activity
[α]/D +61 to +71°, c = 1.0 in methanol
CAS DataBase Reference
170729-80-3(CAS DataBase Reference)
NCI Dictionary of Cancer Terms
aprepitant; Emend
  • Risk and Safety Statements
HS Code  2934990002

Aprepitant price More Price(8)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich SML2215 Aprepitant ≥98% (HPLC) 170729-80-3 5mg $71.1 2019-12-02 Buy
Sigma-Aldrich SML2215 Aprepitant ≥98% (HPLC) 170729-80-3 25mg $154 2019-12-02 Buy
TCI Chemical A3135 Aprepitant >98.0%(HPLC) 170729-80-3 100mg $175 2020-06-24 Buy
TCI Chemical A3135 Aprepitant >98.0%(HPLC) 170729-80-3 500mg $524 2020-06-24 Buy
Cayman Chemical 14867 Aprepitant ≥98% 170729-80-3 1mg $29 2020-06-24 Buy

Aprepitant Chemical Properties,Uses,Production

Anti-Vomiting drug during chemotherapy

Aprepitant is a neurokinin-1 (NK-1) receptor antagonist and belongs to the treating agents of vomiting during chemotherapy of cancer. It was first successfully developed by Merck Company (German). In March 2003, the US Food and Drug Administration approved it for being used in the treatment of chemotherapy vomiting. This product has a high selective affinity to human beings while has a low affinity to serotonin, dopamine and glucocorticoid receptor affinity. Aprepitant, when combined with 5-HT3 receptor inhibitors (such as ondansetron hydrochloride) and the corticosteroid dexamethasone, can further alleviate the cisplatin-induced acute and (or) delayed emesis. Applying this drug alone can have some preventive effect.
Substance P, a kind of tachykinin (neurokinin), is mainly distributed in the neurons of central and peripheral nervous system. It is related with a lot of features such as vomiting, depression, inflammatory pain and other inflammatory diseases. The role of substance P is mediated by NK-1 receptor which is a kind of G protein receptor coupled with phosphoinositide signaling pathway. The drug has blocking effect on the NK-1 receptor through direct binding to this receptor, thus further obtaining the treatment of substance P-mediated diseases.
Aprepitant can selectively prevent the binding of substance P with NK-1 receptor in the central nervous system to take antiemetic effect. Therefore, it can be used for treating the nausea and vomiting caused by the moderately and highly emetogenic chemotherapy.

Dose and usage

When being used for treating the chemotherapy-induced nausea and vomiting, aprepitant is often used in combination with ondansetron (only at the first day of administration) and dexamethasone. Detailed as follows:
At 30 min before chemotherapy, intravenously inject 32 mg of ondansetron, taking 12 mg of dexamethasone; at the morning of 2~4d, take 8 mg of dexamethasone again.
For nausea and vomiting induced by chemotherapy, use a initial dose of 125mg at the first day, administer at 1 hour before chemotherapy; the first 2~3d, daily 80mg; administer at 1 h before chemotherapy; for treating severe depression (with anxiety) administer 300mg each time, qd. However, the efficacy is still not clear. The above instruction doesn’t need dose adjustment for different gender or races. For patients of renal insufficiency, there is no need for dose adjustment; for mild to moderate liver dysfunction, there is no need to adjust the dose as well; we are currently still lack of pharmacokinetic data when severe liver damage happens. It is also not necessary for the elderly to adjust the dose. There is also no need for dose adjustment to patients who are undergoing hemodialysis due to advanced renal disease.
The above information is edited by the chemicalbook of Dai Xiongfeng.

Side effects

Gastrointestinal reaction: when used for the prevention of chemotherapy-induced emesis, aprepitant may cause diarrhea, but clear relationship is still lacking.
Central nervous system: the drug can cause drowsiness and weakness (or lack thereof), but statistical significance was not obvious.
Genitourinary system: when aprepitant is applied for the treatment of severe depression, sexual dysfunction can occur.
Respiratory system: the drug is used for the prevention of chemotherapy-induced emesis, can also cause hiccups. But the clinical significance is not clear.
Skin: occasionally History-Johnson syndrome, urticaria and angioedema can occur.
Liver: when aprepitant is used for the prevention of chemotherapy-induced emesis, it can cause the increase of serum aminotransferase, but the clinical significance is unclear. No cases of liver toxicity had been reported.


Antineoplastic drug.


Aprepitant is an antiemetic chemical compound that belongs to “substance P” antagonists (SPA) with its effect being blocking the neurokinin 1(Nk1) receptor. It is used for the prevention of acute and delayedchemotherapy-induced nausea and vomiting(CINV) and for prevention ofpostoperative nausea and vomiting. It can also be used for the treatment of cyclic vomiting syndrome and late-stage chemotherapy induced vomiting occurring during cancer treatment. Aprepitant alleviates the case of vomiting in patients through balking the signals released by Nk1 receptors. Nk1 is a G-protein-coupled receptor with its ligand being substance P (SP). The high concentration of SP is required for the vomiting reflex. Aprepitant blocks the process of SP-NK1 signaling in activating the vomiting reflex. 

Chemical Properties

Off-White to Light Yellow Cyrstalline Solid


Merck (US)


A novel selective neurokinin-1 (NK-1) receptor antagonist. In vitro studies using human liver microsomes indicate that Aprepitant is metabolised primarily by CYP3A4 with minor metabolism by CYP1A2 and CYP2C19, and no metabolism by CYP2D6, CYP2C9, or CYP2E1. Antiemetic.




ChEBI: A morpholine-based antiemetic, which is or the prevention of acute and delayed nausea and vomiting associated with initial and repeat courses of highly emetogenic cancer chemotherapy. Aprepitant is a selective high-affinity antagonist of human substance P/ eurokinin 1 (NK1) receptors.

brand name

Emend (Merck).

Clinical Use

Aprepitant, a substance P (neurokinin-1 [NK-1]) receptor antagonist used for the treatment of chemotherapy-induced nausea and vomiting, was launched in the US and was later approved in the European Union. It is a non-peptide analog having a trisubstituted morpholine with three chiral centers. Two syntheses have been described. In six steps p-fluorophenylacetic acid is converted to 4-benzyl-3-pfluorophenyl- 2-oxomorpholine with a resolution step setting the S-stereochemistry. This intermediate is converted in six steps to aprepitant, with two of the steps utilizing a chiral induction strategy to set the new centers based upon the chiral 2- oxomorpholine intermediate. SAR efforts leading to aprepitant included engineering in potency for NK-1, decreasing affinity for L-type calcium ion channels, most importantly by decreasing the basicity of the core heterocycle. In vitro, it binds with very high affinity (90 pM) to the hNK1 in transfected CHO cells. It is described as an inverse agonist of hNK-1 receptor, with slow dissociation rate under some conditions. In ferrets dosed orally or intravenously prior to emetogen challenge (cisplatin, apomorphine or morphine), retching and vomiting was reduced. Its antiemetic effect is enhanced with the dosing of dexamethasone and it is effective against both the acute and delayed phase of cisplatin-induced emesis. Cisplatin-induced emesis clinical studies showed that aprepitant (125 mg p.o.) in combination with ondansetron (32 mg i.v.) and dexamethasone (20 mg p.o.) therapeutically followed by repeat dosing (days 2–5) of aprepitant (80 mg) dexamethasone (20 mg) provided acute (8 h) and delayed phase (days 2–7) no vomiting rates of 83 and 70%, respectively. L-758298, a prodrug of aprepitant, was not as effective as ondansetron (32 mg i.v.) in reducing acute phase vomiting, but was superior in reducing vomiting in the delayed phase. The terminal half-life range of aprepitant is 9–13 h and the bioavailability is about 65%. It is highly protein bound (95%) and has a Vdss of 70 L. It is a moderate CYP3A4 inhibitor, thus several drugs cleared by CYP3A4 should not be used concurrently. It is also an inducer of CYP2C9 thus potentially modulating the PK of drugs cleared by CYP2C9. Most side effects were mild to moderate, with fatigue, asthenia, diarrhea, and hiccups.


Curran, Monique P., and D. M. Robinson. "Aprepitant."Drugs69.13(2009):1853-1878.
Sant P. Chawla M.D. † ‡, et al. "Establishing the dose of the oral NK 1, antagonist aprepitant for the prevention of chemotherapy-induced nausea and vomiting." Cancer 97.9(2003):2290-2300.
Warr, D. G., et al. "Efficacy and tolerability of aprepitant for the prevention of chemotherapy-induced nausea and vomiting in patients with breast cancer after moderately emetogenic chemotherapy." Journal of Clinical Oncology Official Journal of the American Society of Clinical Oncology23.12(2005):2822-30.

Aprepitant Preparation Products And Raw materials

Raw materials

Preparation Products

Aprepitant Suppliers

Global( 330)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Nanjing Gold Pharmaceutical Technology Co. Ltd.
025-84209270 15906146951
025-84209270 CHINA 115 55
Shanghai Yingrui Biopharma Co., Ltd.
+86-21-34979012 CHINA 739 60
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Beijing Cooperate Pharmaceutical Co.,Ltd.
+86-10-60279497 +86(0)15646567669
+86-10-60279497 CHINA 1817 55
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0371-55170693 CHINA 22626 55
020-81716319 CHINA 3050 55
Nanjing ChemLin Chemical Industry Co., Ltd.
025-83697070 CHINA 3014 60
+86 21 5161 9050/ 5187 7795
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career henan chemical co
+86-371-86658258 CHINA 30045 58
Hebei Huanhao Biotechnology Co., Ltd.
86-0311-83975816 CHINA 817 58

View Lastest Price from Aprepitant manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2020-05-06 Aprepitant
US $1.00-1.00 / KG 1g 99% 50tons Shaanxi Dideu Medichem Co. Ltd
2019-08-27 Aprepitant
US $0.00-0.00 / KG 1g 99.0% 50kg/month Beijing Yibai Biotechnology Co., Ltd
2018-08-09 Aprepitant
US $1.00 / KG 1KG 99% 1000KG career henan chemical co

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