CompoundList
Sign in
Heterocyclic building blocks

2-Mepp

Also known as 1-(2-Methylphenyl)piperazine, 1-(o-Tolyl)piperazine, Piperazine, 1-(2-methylphenyl)-

CAS 39512-51-1Formula C11H16N2Molar mass 176.26 g/molEC 254-481-9
GHS signal word: Danger. Pictograms: Corrosive, Acute toxicity (severe), Serious health hazard 4 suppliers listed
Get quotes Compare 4 suppliers
2-Mepp chemical structure, C11H16N2, CAS 39512-51-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
39512-51-1
Formula
C11H16N2
Molar mass
176.26 g/mol
EC number
254-481-9
HS code
293359
Category
Heterocyclic building blocks

What is 2-Mepp?

Plain description, key identifiers and synonyms

2-Mepp is a chemical substance with the molecular formula C11H16N2 and a molar mass of 176.26 g/mol. Its CAS registry number is 39512-51-1. The IUPAC name is 1-(2-methylphenyl)piperazine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-(2-methylphenyl)piperazine
CAS number
39512-51-1 CAS number cross-checked
EC number
254-481-9
Molecular formula
C11H16N2
UNII
6P26KQQ7V5
MDL number
MFCD00040729
InChIKey
WICKLEOONJPMEQ-UHFFFAOYSA-N
InChI
InChI=1S/C11H16N2/c1-10-4-2-3-5-11(10)13-8-6-12-7-9-13/h2-5,12H,6-9H2,1H3
SMILES (canonical and isomeric)
CC1=CC=CC=C1N2CCNCC2

Synonyms

  • 1-(2-Methylphenyl)piperazine
  • 1-(o-Tolyl)piperazine
  • Piperazine, 1-(2-methylphenyl)-
  • 4-(2-Methylphenyl)piperazine
  • ortho-Methylphenylpiperazine
  • o-Methylphenylpiperazine
  • 1-o-tolylpiperazine
  • 1-(2-Methylphenyl)-piperazine
  • 1-o-Tolyl-piperazine
  • (2-methylphenyl)piperazine
  • 2-Methylphenylpiperazine
  • 1-(2-tolyl)piperazine
  • N-(o-tolyl)-piperazine
  • 1-(o-tolyl) piperazine
  • 2-methylphenyl-piperazine
  • 1-(2-methyl-phenyl)-piperazine
  • PDSP1_000005
  • PDSP2_000005

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
176.26 g/molcalc.
Exact mass
176.1313 Dacalc.
LogP (octanol/water)
1.4calc.
Topological polar surface area
15.27 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
13calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.46calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccc(N2CCNCC2)cc1

c1ccc(N2CCNCC2)cc1

2 rings, 12 atoms, the 1-Phenylpiperazine ring system.

6,402 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H311Toxic in contact with skin.
  • H314Causes severe skin burns and eye damage.
  • H318Causes serious eye damage.
  • H350May cause cancer.
Precautionary statements (20)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

2-Mepp suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 4 suppliers
4 of 4 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

4 suppliers in 3 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

2-Mepp price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 2-Mepp is traded under.

HS 2933.59Indicative HS code

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring, other

World exports in 2024
$18.4B
+10.5% vs 2023, imports $24.8B
2019 to 2024
Top exporters
  1. Ireland43.6%
  2. Switzerland * partner reported26.3%
  3. China7.9%
Top importers
  1. Slovenia30.3%
  2. United States30.1%
  3. Germany15.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for 2-Mepp is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Mepp, based on the data on this page

What is 2-Mepp?

2-Mepp is a chemical substance with the molecular formula C11H16N2 and a molar mass of 176.26 g/mol. Its CAS registry number is 39512-51-1. The IUPAC name is 1-(2-methylphenyl)piperazine.

What is the CAS number of 2-Mepp?

The CAS registry number of 2-Mepp is 39512-51-1.

What is the molecular formula and weight of 2-Mepp?

The molecular formula of 2-Mepp is C11H16N2 and its molar mass is 176.26 g/mol.

What is 2-Mepp used for?

Known uses and roles of 2-Mepp include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 2-Mepp hazardous?

2-Mepp carries the GHS signal word "Danger". Main hazards: toxic in contact with skin, causes severe skin burns and eye damage, causes serious eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Mepp?

2-Mepp is usually classified under HS code 293359 (Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Mepp?

CompoundList lists 4 suppliers of 2-Mepp in Germany, China and India. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy 2-Mepp in India?

1 supplier in India list 2-Mepp on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 2-Mepp?

Suppliers quote 2-Mepp on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 2-Mepp

Get quotes for 2-Mepp

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell 2-Mepp
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of 2-Mepp with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/2-mepp-39512-51-1" title="2-Mepp structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Heterocyclic building blocks or HS code 293359

4 suppliers
Free quotes, contact stays private
Get quotes