Medetomidine HCl: Chemical Profile, CAS Number, Pharmacology, Veterinary Research & Analytical Methods

Medetomidine HCl is the hydrochloride salt form of medetomidine, an alpha-2 adrenergic agonist studied in veterinary pharmacology, toxicology, analytical chemistry, and chemical documentation. It is also known as medetomidine hydrochloride and appears in chemical databases, veterinary medicine records, safety documentation, and forensic toxicology discussions.

This chemical profile reviews medetomidine HCl’s CAS number, molecular formula, structure, pharmacology, veterinary research relevance, toxicology overview, analytical identification methods, and regulatory context.

General Information

Property	Value
Chemical Name	Medetomidine Hydrochloride
Common Name	Medetomidine HCl
Parent Compound	Medetomidine
Medetomidine HCl CAS Number	86347-15-1
Medetomidine Free Base CAS Number	86347-14-0
PubChem CID	68601
Parent PubChem CID	68602
Molecular Formula	C13H17ClN2
Molecular Weight	236.74 g/mol
Parent Formula	C13H16N2
Parent Molecular Weight	About 200.28 g/mol
Chemical Class	Alpha-2 adrenergic agonist
Research Context	Veterinary pharmacology, toxicology, analytical chemistry, forensic research

Chemical Identity

Medetomidine HCl is a hydrochloride salt form of medetomidine. The parent compound is a substituted imidazole derivative with alpha-2 adrenergic agonist activity. The hydrochloride salt form has its own CAS number, formula, molecular weight, and documentation record.

For accurate documentation, medetomidine HCl should be identified by its exact chemical name, CAS number, salt form, molecular formula, molecular weight, synonyms, Safety Data Sheet, Certificate of Analysis, and analytical method records.

For background on chemical identifiers, see our guide to What Is a CAS Number?.

Chemical Structure Overview

Medetomidine contains several important structural features:

• Imidazole ring
• Substituted aromatic ring
• Chiral center
• Alpha-2 adrenergic agonist scaffold
• Hydrochloride salt association in medetomidine HCl

These features are important in pharmacology, stereochemistry, chemical identity, veterinary research, and analytical detection.

Medetomidine HCl vs Medetomidine Free Base

Medetomidine HCl and medetomidine free base are closely related, but they are not identical chemical records.

Medetomidine free base is commonly represented as:

C13H16N2

Medetomidine hydrochloride is commonly represented as:

C13H17ClN2

The hydrochloride salt form has a different formula and molecular weight from the free base. This matters when reviewing chemical databases, SDS records, COAs, analytical standards, veterinary product labels, and laboratory inventory systems.

Researchers should confirm whether a record refers to medetomidine free base, medetomidine hydrochloride, dexmedetomidine, or another related alpha-2 agonist.

Medetomidine and Dexmedetomidine

Medetomidine and dexmedetomidine are closely related but should not be treated as identical terms.

Medetomidine is commonly discussed as a racemic mixture. Dexmedetomidine is the dextrorotatory enantiomer and is pharmacologically important in human and veterinary medicine. This stereochemical distinction matters in pharmacology, toxicology, analytical chemistry, and regulatory documentation.

Chemical profiles should clearly separate:

• Medetomidine
• Medetomidine hydrochloride
• Dexmedetomidine
• Dexmedetomidine hydrochloride
• Veterinary formulations
• Analytical reference materials

Veterinary and Historical Context

Medetomidine is best known in veterinary pharmacology. It has been used as a sedative and analgesic compound in animals and is often discussed alongside other alpha-2 adrenergic agonists such as xylazine, detomidine, romifidine, and dexmedetomidine.

DailyMed includes veterinary labeling for medetomidine hydrochloride products, and the PubChem medetomidine hydrochloride record provides chemical identity data for the compound.

In scientific writing, medetomidine HCl is relevant to:

• Veterinary sedation research
• Alpha-2 adrenergic receptor pharmacology
• Analytical chemistry
• Toxicology
• Forensic toxicology
• Regulatory science
• Chemical safety documentation

Pharmacology Overview

Medetomidine is an alpha-2 adrenergic agonist. This receptor class is associated with sedation, analgesia, muscle relaxation, and reduced sympathetic activity in veterinary pharmacology.

At a high level, medetomidine acts through alpha-2 adrenergic receptor pathways. These pathways influence neurotransmitter release and central nervous system signaling.

Scientific discussion may include:

• Alpha-2 receptor activity
• Sedation research
• Analgesia research
• Veterinary anesthesia
• Sympathetic nervous system modulation
• Comparison with dexmedetomidine
• Comparison with xylazine and detomidine
• Toxicology of alpha-2 agonists

Pharmacology sections should remain educational and should not provide administration, dosage, or clinical-use instructions.

Mechanism of Action

Medetomidine’s mechanism is generally discussed through alpha-2 adrenergic receptor agonism. Activation of alpha-2 receptors can reduce norepinephrine release and alter sympathetic nervous system signaling.

This mechanism is relevant in veterinary sedation research, analgesia research, toxicology, and comparison studies involving other alpha-2 agonists.

Because medetomidine affects central nervous system and cardiovascular pathways, mechanism discussions should remain high-level and scientific.

Laboratory and Research Applications

Medetomidine HCl may be relevant in legitimate laboratory and scientific contexts where researchers study identity, receptor pharmacology, veterinary medicine, analytical detection, toxicology, or forensic chemistry.

Research-related contexts include:

• Analytical method development
• LC-MS identification studies
• GC-MS method development
• HPLC method validation
• Reference standard comparison
• Veterinary pharmacology research
• Alpha-2 receptor research
• Toxicology screening
• Forensic toxicology surveillance
• Regulatory science
• Chemical safety documentation

These contexts should be framed as scientific and analytical research, not product-use guidance.

Analytical Identification

Medetomidine HCl can be evaluated using several analytical chemistry techniques. The selected method depends on the sample matrix, sensitivity needs, research objective, and documentation standard.

Common analytical approaches include:

• LC-MS
• GC-MS
• HPLC
• NMR spectroscopy
• FTIR spectroscopy
• UV-Visible spectroscopy
• Chiral analysis
• Reference standard comparison

LC-MS and GC-MS may be especially relevant in complex matrices and forensic toxicology contexts. HPLC may support assay, purity, or method validation work. Chiral analysis may be useful when distinguishing stereochemical forms.

Reliable identification should compare CAS number, formula, molecular weight, salt form, stereochemistry, retention behavior, spectral data, SDS records, COA documentation, and reference material information.

Medetomidine in Forensic Toxicology

Medetomidine has become increasingly important in forensic toxicology because public-health agencies have reported its detection in the illicit drug supply. This has created new interest in analytical detection, toxicology interpretation, and public-health surveillance.

Forensic review may focus on:

• Detection in seized materials
• Detection in biological specimens
• LC-MS confirmation
• High-resolution mass spectrometry
• Toxicology screening
• Co-exposure interpretation
• Differentiation from related alpha-2 agonists
• Public-health reporting

Forensic toxicology discussion should remain neutral and scientific. It should not describe sourcing, preparation, concealment, or misuse practices.

Toxicology Overview

Medetomidine has toxicological relevance because alpha-2 agonists can affect the central nervous system and cardiovascular system. Toxicological interpretation depends on exposure context, concentration, formulation, route, co-exposures, and the specific chemical form being reviewed.

A scientific toxicology overview may consider:

• Sedation
• Bradycardia
• Hypotension
• Respiratory concerns
• Central nervous system depression
• Co-exposures
• Withdrawal concerns
• Species differences
• Analytical confirmation
• Emergency toxicology literature

Toxicology sections should be based on scientific literature, public-health reporting, SDS data, and qualified safety documentation.

Medetomidine and Public-Health Reporting

Medetomidine has appeared in public-health alerts because it has been identified in the illicit fentanyl supply in the United States. This has made it relevant to forensic laboratories, toxicology teams, clinicians, and public-health surveillance programs.

This public-health context should be handled carefully. A responsible scientific article should focus on detection, toxicology, chemical identity, and regulatory awareness. It should not include misuse-enabling details.

Safety Data and Documentation

Medetomidine HCl documentation should clearly identify the exact chemical form being reviewed. Medetomidine free base, medetomidine hydrochloride, dexmedetomidine, and related alpha-2 agonists may differ in formula, molecular weight, stereochemistry, CAS number, pharmacology, and regulatory status.

Useful documentation includes:

• Safety Data Sheet
• Certificate of Analysis
• CAS record
• Chemical database record
• Veterinary product label
• Analytical method data
• Toxicology literature
• Forensic toxicology reports
• Regulatory database entry

An SDS may provide hazard communication information. A COA may provide batch-specific testing data. Neither document should be used alone as a complete chemical identity record.

Regulatory Considerations

Medetomidine’s regulatory status depends on country, formulation, species, intended use, labeling, route, and professional context. It may appear in veterinary medicine, analytical research, toxicology, forensic science, and public-health reporting.

Researchers should verify applicable laws, institutional policies, supplier documentation, SDS records, veterinary medicine regulations, and regulatory database information before making compliance decisions.

Regulatory discussion should avoid purchase, sourcing, self-use, or clinical-use instructions.

Why Medetomidine Requires Careful Chemical Context

Medetomidine is a strong example of why chemical profiles must distinguish between related but non-identical records.

The same topic may involve several different identities:

• Medetomidine free base
• Medetomidine hydrochloride
• Dexmedetomidine
• Dexmedetomidine hydrochloride
• Veterinary formulations
• Analytical reference materials
• Forensic toxicology findings
• Public-health alerts

For scientific accuracy, researchers should verify the exact compound, salt form, stereochemistry, CAS number, formula, documentation record, and regulatory context before comparing data.

Common Misunderstandings About Medetomidine HCl

Medetomidine HCl is sometimes misunderstood because it appears in veterinary medicine, chemical databases, toxicology reports, and forensic public-health discussions.

Common misunderstandings include:

• Treating medetomidine HCl and medetomidine free base as identical records
• Treating medetomidine and dexmedetomidine as the same term
• Ignoring stereochemistry
• Assuming veterinary relevance means human approval
• Treating an SDS as proof of purity
• Ignoring COA batch documentation
• Overlooking forensic toxicology concerns
• Assuming regulatory status is the same worldwide

A responsible chemical profile should separate identity, salt form, stereochemistry, pharmacology, toxicology, analytical methods, and regulation.

Frequently Asked Questions

What is Medetomidine HCl?

Medetomidine HCl is the hydrochloride salt form of medetomidine, an alpha-2 adrenergic agonist studied in veterinary pharmacology, toxicology, and analytical chemistry.

What is the CAS number for Medetomidine HCl?

The CAS number for medetomidine hydrochloride is 86347-15-1.

What is the CAS number for medetomidine free base?

The CAS number for medetomidine free base is 86347-14-0.

What is the molecular formula of Medetomidine HCl?

The molecular formula of medetomidine hydrochloride is C13H17ClN2.

What is the molecular formula of medetomidine free base?

The molecular formula of medetomidine free base is C13H16N2.

Is medetomidine the same as dexmedetomidine?

No. Medetomidine is commonly discussed as a racemic mixture, while dexmedetomidine is the dextrorotatory enantiomer.

What chemical class does medetomidine belong to?

Medetomidine belongs to the alpha-2 adrenergic agonist class.

Why is medetomidine important in veterinary research?

Medetomidine is important because it has been used and studied as a veterinary sedative and analgesic compound.

Why is medetomidine important in forensic toxicology?

Medetomidine has been reported in the illicit drug supply, which has made it relevant to toxicology screening, forensic detection, and public-health surveillance.

What analytical methods may be used for medetomidine HCl?

Common methods include LC-MS, GC-MS, HPLC, NMR, FTIR, UV-Visible spectroscopy, chiral analysis, and reference standard comparison.

Why does the hydrochloride salt form matter?

The hydrochloride salt has a different formula, molecular weight, CAS number, and documentation record from medetomidine free base.

What documents should researchers review?

Researchers should review SDS records, COAs, CAS records, chemical database entries, veterinary labels, analytical method data, toxicology literature, public-health reports, and regulatory files.

References

• PubChem Medetomidine Hydrochloride
• PubChem Medetomidine
• DailyMed Medetomidine Hydrochloride veterinary labeling
• CDC Health Alert Network medetomidine notice
• Scientific literature on alpha-2 adrenergic agonists and veterinary pharmacology