Harman
An indole alkaloid fundamental parent with a structure of 9H-β-carboline carrying a methyl substituent at C-1. It has been isolated from the bark of Sickingia rubra, Symplocus racemosa, Passiflora incarnata, Peganum harmala, Banisteriopsis caapi and Tribulus terrestris, as well as from tobacco smoke. It is a specific, reversible inhibitor of monoamine oxidase A. — ChEBI
Safety documents & references
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Identity & molecular properties
Source-linked values| CAS number | 486-84-0 | ChEBI ↗ |
| Molecular formula | C12H10N2 | ChEBI ↗ |
| Molar mass | 182.226 g/mol | ChEBI ↗ |
| Monoisotopic mass | 182.0844 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:5623 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 182.22 g/mol | PubChem ↗ |
| Exact mass | 182.084398327 Da | PubChem ↗ |
| Computed XLogP | 3.6 | PubChem ↗ |
| Topological polar surface area (Ų) | 28.7 | PubChem ↗ |
| H-bond donors | 1 | PubChem ↗ |
| H-bond acceptors | 1 | PubChem ↗ |
| Rotatable bonds | 0 | PubChem ↗ |
PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.
Names & structural identifiers
Copy any identifierharman1-methyl-9H-pyrido[3,4-b]indolePSFDQSOCUJVVGF-UHFFFAOYSA-NCc1nccc2c1nc1ccccc12InChI=1S/C12H10N2/c1-8-12-10(6-7-13-8)9-4-2-3-5-11(9)14-12/h2-7,14H,1H3Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.
Mass ↔ amount of substance
Calculated from sourced massUses 182.226 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsCNHCalculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.