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Heterocyclic building blocks

Pyrazidole

Also known as Pirlindole hydrochloride, 8-methyl-2,3,3a,4,5,6-hexahydro-1H-pyrazino[3,2,1-jk]carbazole hydrochloride, 8-Methyl-2,3,3a,4,5,6-hexahydro-1H-pyrazino-[3,2,1-jk]carbazole hydrochloride

CAS 16154-78-2Formula C15H19ClN2Molar mass 262.78 g/molEC 240-307-9
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Pyrazidole chemical structure, C15H19ClN2, CAS 16154-78-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
16154-78-2
Formula
C15H19ClN2
Molar mass
262.78 g/mol
EC number
240-307-9
HS code
293399
Category
Heterocyclic building blocks

What is Pyrazidole?

Plain description, key identifiers and synonyms

Pyrazidole is a chemical substance with the molecular formula C15H19ClN2 and a molar mass of 262.78 g/mol. Its CAS registry number is 16154-78-2. The IUPAC name is 12-methyl-1,4-diazatetracyclo[7.6.1.05,16.010,15]hexadeca-9(16),10(15),11,13-tetraene, hydrochloride.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
12-methyl-1,4-diazatetracyclo[7.6.1.05,16.010,15]hexadeca-9(16),10(15),11,13-tetraene, hydrochloride
CAS number
16154-78-2
EC number
240-307-9
Molecular formula
C15H19ClN2
UNII
Q89W8I397C
MDL number
MFCD00220370
InChIKey
LIFOOCLGAAEVIF-UHFFFAOYSA-N
InChI
InChI=1S/C15H18N2.ClH/c1-10-5-6-14-12(9-10)11-3-2-4-13-15(11)17(14)8-7-16-13;/h5-6,9,13,16H,2-4,7-8H2,1H3;1H
SMILES (canonical and isomeric)
CC1=CC2=C(C=C1)N3CCNC4C3=C2CCC4.Cl

Synonyms

  • Pirlindole hydrochloride
  • 8-methyl-2,3,3a,4,5,6-hexahydro-1H-pyrazino[3,2,1-jk]carbazole hydrochloride
  • 8-Methyl-2,3,3a,4,5,6-hexahydro-1H-pyrazino-[3,2,1-jk]carbazole hydrochloride
  • 2,3,3A,4,5,6-hexahydro-8-methyl-1H-pyrazino[3,2,1-jk]carbazole monohydrochloride
  • 12-methyl-1,4-diazatetracyclo[7.6.1.05,16.010,15]hexadeca-9(16),10(15),11,13-tetraene, hydrochloride
  • 1H-Pyrazino[3,2,1-jk]carbazole, 2,3,3a,4,5,6-hexahydro-8-methyl-, hydrochloride (1:1)
  • 2,3,3a,4,5,6-Hexahydro-8-methyl-1H-pyrazino(3,2,1-jk)carbazole monohydrochloride
  • Pirlindon
  • pirlindole HCl
  • Implementor (TN)
  • 1H-Pyrazino(3,2,1-jk)carbazole, 2,3,3a,4,5,6-hexahydro-8-methyl-, hydrochloride (1:1)
  • 1,10-Trimethylene-8-methyltetrahydropyrazino(1,2-a)indole hydrochloride
  • CPD3.1 HCl
  • 2,3,3a,4,5,6-Hexahydro-8-methyl-1H-pyrazino(3,2,1j,k)carbazole hydrochloride
  • Pirlindole-d4 (deuterated)
  • 1,10-Trimethylene-8-methyl-1,2,3,4-tetrahydropyrazino(1,2-a)indole hydrochloride
  • 8-Methyl-2,3,3a,4,5,6-hexahydro-1H-pyrazino[3,2,1-jk]carbazole HCl
  • 2,3,3a,4,5,6-hexahydro-8-methyl-1h-pyrazino-[3,2,1-jk]-carbazole hydrochloride
  • 8-methyl-2,3,3a,4,5,6-hexahydro-1h-pyrazino[3,2,1-jk]carbazolehydrochloride

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
262.78 g/molcalc.
Exact mass
262.1237 Dacalc.
LogP (octanol/water)
3.35calc.
Topological polar surface area
16.96 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
18calc.
Rings
4calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.47calc.
Formal charge
0calc.
Stereocentres
1calc.
Components
2calc.
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, c1ccc2c(c1)c1c3n2CCNC3CCC1

c1ccc2c(c1)c1c3n2CCNC3CCC1

4 rings, 16 atoms, the 2,3,3a,4,5,6-Hexahydro-1H-pyrazino[3,2,1-jk]carbazole ring system.

61 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Pyrazidole suppliers

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Pyrazidole price

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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 Pyrazidole is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Pyrazidole, based on the data on this page

What is Pyrazidole?

Pyrazidole is a chemical substance with the molecular formula C15H19ClN2 and a molar mass of 262.78 g/mol. Its CAS registry number is 16154-78-2. The IUPAC name is 12-methyl-1,4-diazatetracyclo[7.6.1.05,16.010,15]hexadeca-9(16),10(15),11,13-tetraene, hydrochloride.

What is the CAS number of Pyrazidole?

The CAS registry number of Pyrazidole is 16154-78-2.

What is the molecular formula and weight of Pyrazidole?

The molecular formula of Pyrazidole is C15H19ClN2 and its molar mass is 262.78 g/mol.

What is Pyrazidole used for?

Known uses and roles of Pyrazidole include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Pyrazidole hazardous?

No GHS hazard classification for Pyrazidole is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Pyrazidole?

Pyrazidole is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pyrazidole?

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What is the price of Pyrazidole?

Suppliers quote Pyrazidole 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 Pyrazidole

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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