CompoundList
Sign in
Heterocyclic compounds

Harmalol

Also known as Harmidol, Harmolol, 1-methyl-4,9-dihydro-3H-pyrido[3,4-b]indol-7-ol

CAS 525-57-5Formula C12H12N2OMolar mass 200.24 g/molEC 208-375-4
2 suppliers listed
Get quotes Compare 2 suppliers
Harmalol chemical structure, C12H12N2O, CAS 525-57-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
525-57-5
Formula
C12H12N2O
Molar mass
200.24 g/mol
EC number
208-375-4
HS code
293399
Category
Heterocyclic compounds

What is Harmalol?

Plain description, key identifiers and synonyms

Harmalol is a harmala alkaloid in which the harman skeleton is hydroxy-substituted at C-7 and has been reduced across the 3,4 bond. It has a role as an EC 1.4.3.4 (monoamine oxidase) inhibitor and an algal metabolite. It derives from a hydride of a harman.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-methyl-4,9-dihydro-3H-pyrido[3,4-b]indol-7-ol
CAS number
525-57-5 CAS number cross-checkedOther or deprecated CAS: 6028-00-8
EC number
208-375-4
Molecular formula
C12H12N2O
UNII
2NQN80556Q
MDL number
MFCD00152093
InChIKey
RHVPEFQDYMMNSY-UHFFFAOYSA-N
InChI
InChI=1S/C12H12N2O/c1-7-12-10(4-5-13-7)9-3-2-8(15)6-11(9)14-12/h2-3,6,14-15H,4-5H2,1H3
SMILES (canonical and isomeric)
CC1=NCCC2=C1NC3=C2C=CC(=C3)O

Synonyms

  • Harmidol
  • Harmolol
  • 1-methyl-4,9-dihydro-3H-pyrido[3,4-b]indol-7-ol
  • 1-Methyl-4,9-dihydro-3H-beta-carbolin-7-ol
  • 4,9-Dihydro-1-methyl-3H-pyrido(3,4-b)indol-7-ol
  • 4,9-Dihydro-1-methyl-3H-pyrido[3,4-b]indol-7-ol
  • 1-methyl-4,9-dihydro-3H-pyrido(3,4-b)indol-7-ol
  • 3H-Pyrido[3,4-b]indol-7-ol, 4,9-dihydro-1-methyl-
  • 11-Hydroxyharmalan, NSC 72293
  • 1-methyl-3,4-dihydrobeta-carbolin-7-ol
  • 3H-Pyrido(3,4-b)indol-7-ol, 4,9-dihydro-1-methyl-
  • 1-Methyl-4,9-dihydro-3H-beta-carbolin-7-ol hydrochloride
  • 4,9-Dihydro-1-methyl-3H-pyrido(3,4-b)indol-7-ol monohydrochloride
  • 1-methyl-3H,4H,9H-pyrido[3,4-b]indol-7-ol
  • 4,9-Dihydro-1-methyl-3H-pyrido[3,4-b]indol-7-ol, 11-Hydroxyharmalan, NSC 72293,
  • 3H-Pyrido[3,4-b]indol-7-ol,4,9-dihydro-1-methyl-
  • HARMALINE_met004
  • DivK1c_000998
  • Sdccgmls-0066705.p001
  • 3H-Pyrido[3, 4,9-dihydro-1-methyl-
  • 1-Methyl-4,9-dihydro-3H-?-carbolin-7-ol
  • 3,4-Dihydro-7-hydroxy-1-methyl-b-carboline
  • 3,4-Dihydro-1-methyl-2H-Pyrido[3,4-b]indol-7-ol
  • 2H-Pyrido[3,4-b]indol-7-ol, 3,4-dihydro-1-methyl-
  • 3,4-Dihydro-1-methyl-9H-pyrido(3,4-b)indol-7-ol
Show all 29 synonyms
  • 4,9-Dihydro-1-methyl-3H-pyrido[3,4-b]indol-7-ol, 9CI
  • 1-Methyl-2,3,4,9-tetrahydro-7H-pyrido[3,4-b]indol-7-one
  • 3H-Pyrido(3,4-b)indol-7-ol, 4,9-dihydro-1-methyl- (8CI)(9CI)
  • 1-methyl-2,3,4,9-tetrahydro-beta-carbolin-7-one, hydrate, hydrochloride

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
200.24 g/molcalc.
Exact mass
200.095 Dacalc.
LogP (octanol/water)
2.24calc.
Topological polar surface area
48.38 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
15calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.25calc.
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, C1=NCCc2c1[nH]c1ccccc21

C1=NCCc2c1[nH]c1ccccc21

3 rings, 13 atoms, the 3H-Pyrido(3,4-b)indole, 4,9-dihydro- ring system.

49 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.

Harmalol suppliers

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

All 2 suppliers

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

2 suppliers in 1 country

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

Harmalol 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

Roles

  • algal metabolite
  • enzyme inhibitor
  • eukaryotic metabolite
  • metabolite

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 Harmalol 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 Harmalol is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Harmalol?

Harmalol is a harmala alkaloid in which the harman skeleton is hydroxy-substituted at C-7 and has been reduced across the 3,4 bond. It has a role as an EC 1.4.3.4 (monoamine oxidase) inhibitor and an algal metabolite. It derives from a hydride of a harman.

What is the CAS number of Harmalol?

The CAS registry number of Harmalol is 525-57-5. Other or deprecated CAS numbers: 6028-00-8.

What is the molecular formula and weight of Harmalol?

The molecular formula of Harmalol is C12H12N2O and its molar mass is 200.24 g/mol.

What is Harmalol used for?

Known uses and roles of Harmalol include algal metabolite, enzyme inhibitor, eukaryotic metabolite and metabolite.

Is Harmalol hazardous?

No GHS hazard classification for Harmalol 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 Harmalol?

Harmalol 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 Harmalol?

CompoundList lists 2 suppliers of Harmalol in United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Harmalol?

Suppliers quote Harmalol 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 Harmalol

Get quotes for Harmalol

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Harmalol
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 Harmalol 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/harmalol-525-57-5" title="Harmalol 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 compounds or HS code 293399

2 suppliers
Free quotes, contact stays private
Get quotes