Amitriptyline HCl

    WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 317182

CAS#: 549-18-8 (HCl)

Description: Amitriptyline, sold under the brand name Elavil among others, is a medication used to treat a number of mental illnesses. This including major depressive disorder and anxiety disorder, and less commonly attention deficit hyperactivity disorder and bipolar disorder. Other uses include prevention of migraines, treatment of neuropathic pain such as fibromyalgia and postherpetic neuralgia, and less commonly insomnia. It is taken by mouth. Common side effects include a dry mouth, trouble seeing, low blood pressure on standing, sleepiness, and constipation.

Chemical Structure

Amitriptyline HCl
CAS# 549-18-8 (HCl)

Theoretical Analysis

MedKoo Cat#: 317182
Name: Amitriptyline HCl
CAS#: 549-18-8 (HCl)
Chemical Formula: C20H24ClN
Exact Mass: 277.18305
Molecular Weight: 313.869
Elemental Analysis: C, 76.54; H, 7.71; Cl, 11.29; N, 4.46

Size Price Shipping out time Quantity
1g USD 90 2 Weeks
2g USD 150 2 Weeks
5g USD 250 2 Weeks
10g USD 450 2 Weeks
25g USD 650 2 Weeks
50g USD 950 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2021-02-25. Prices are subject to change without notice.

Amitriptyline HCl, purity > 98%, is in stock. Current shipping out time is about 2 weeks after order is received. CoA, QC data and MSDS documents are available in one week after order is received.

Related CAS #: 549-18-8 (HCl)   50-48-6 (free base)    

Synonym: Amitriptyline HCl; Amitriptyline hydrochloride; Elavil; Amitriptylin; Tryptanol; Damilen; Triptanol

IUPAC/Chemical Name: 3-(10,11-dihydro-5H-dibenzo[a,d][7]annulen-5-ylidene)-N,N-dimethylpropan-1-amine hydrochloride


InChi Code: InChI=1S/C20H23N.ClH/c1-21(2)15-7-12-20-18-10-5-3-8-16(18)13-14-17-9-4-6-11-19(17)20;/h3-6,8-12H,7,13-15H2,1-2H3;1H


Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO, not in water

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:

Handling Instructions:

Preparing Stock Solutions

The following data is based on the product molecular weight 313.869 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

Molarity Calculator

Calculate the mass, volume, or concentration required for a solution.

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Dilution Calculator

Calculate the dilution required to prepare a stock solution.

1: Aydin B, Hocaoglu N, Micili SC, Ergur BU, Kalkan S. Effects of 2-Hydroxypropyl-Beta-Cyclodextrin on Cardiovascular Signs of Amitriptyline Poisoning in a Rat Model. Cardiovasc Toxicol. 2015 Nov 30. [Epub ahead of print] PubMed PMID: 26621115.

2: Schmidt JJ, Bertram A, Kühn-Velten WN, Suhling H, Wiesner O, Schneider A, Kielstein JT. Treatment of amitriptyline intoxications by extended high cut-off dialysis. Clin Kidney J. 2015 Dec;8(6):796-9. doi: 10.1093/ckj/sfv094. Epub 2015 Sep 29. PubMed PMID: 26613042; PubMed Central PMCID: PMC4655799.

3: Abdulmajeed WI, Ibrahim RB, Ishola AO, Balogun WG, Cobham AE, Amin A. Amitriptyline and phenytoin prevents memory deficit in sciatic nerve ligation model of neuropathic pain. J Basic Clin Physiol Pharmacol. 2015 Nov 13. pii: /j/jbcpp.ahead-of-print/jbcpp-2014-0052/jbcpp-2014-0052.xml. doi: 10.1515/jbcpp-2014-0052. [Epub ahead of print] PubMed PMID: 26565548.

4: Taziki S, Sattari MR, Dastmalchi S, Eghbal MA. Cytoprotective Effects of Melatonin Against Amitriptyline-Induced Toxicity in Isolated Rat Hepatocytes. Adv Pharm Bull. 2015 Sep;5(3):329-34. doi: 10.15171/apb.2015.046. Epub 2015 Sep 19. PubMed PMID: 26504754; PubMed Central PMCID: PMC4616901.

5: Aonurm-Helm A, Anier K, Zharkovsky T, Castrén E, Rantamäki T, Stepanov V, Järv J, Zharkovsky A. NCAM-deficient mice show prominent abnormalities in serotonergic and BDNF systems in brain - Restoration by chronic amitriptyline. Eur Neuropsychopharmacol. 2015 Oct 21. pii: S0924-977X(15)00326-0. doi: 10.1016/j.euroneuro.2015.10.001. [Epub ahead of print] PubMed PMID: 26499173.

6: Mercadante S. Topical amitriptyline and ketamine for the treatment of neuropathic pain. Expert Rev Neurother. 2015 Nov;15(11):1249-53. doi: 10.1586/14737175.2015.1101347. Epub 2015 Oct 21. PubMed PMID: 26488799.

7: Damapong P, Kanchanakhan N, Eungpinichpong W, Putthapitak P, Damapong P. A Randomized Controlled Trial on the Effectiveness of Court-Type Traditional Thai Massage versus Amitriptyline in Patients with Chronic Tension-Type Headache. Evid Based Complement Alternat Med. 2015;2015:930175. doi: 10.1155/2015/930175. Epub 2015 Sep 15. PubMed PMID: 26472986; PubMed Central PMCID: PMC4587431.

8: Ratajczak-Enselme M, Grégoire N, Estebe JP, Dollo G, Chevanne F, Bec D, Ecoffey C, Couet W, Le Corre P. Population Pharmacokinetics of Amitriptyline After Intrathecal, Epidural, and Intravenous Administration in Sheep. Reg Anesth Pain Med. 2015 Nov-Dec;40(6):681-6. doi: 10.1097/AAP.0000000000000322. PubMed PMID: 26469370.

9: Zeng C, Zhu Z, Liu Q. HMGB1 is responsible for Amitriptyline-mediated cardiac protection from ischemic-reperfusion injury. Int J Cardiol. 2015 Sep 25. pii: S0167-5273(15)30379-X. doi: 10.1016/j.ijcard.2015.08.157. [Epub ahead of print] PubMed PMID: 26431816.

10: Rico-Villademoros F, Slim M, Calandre EP. Amitriptyline for the treatment of fibromyalgia: a comprehensive review. Expert Rev Neurother. 2015 Oct;15(10):1123-50. doi: 10.1586/14737175.2015.1091726. Epub 2015 Sep 22. PubMed PMID: 26395929.

(Last update: 4/21/2016).