Chemical identity

9,10-Dihydroergometrine

CAS not listed · C19H25N3O2

01Identity

Identifiers and names for this exact compound. Empty fields are left unassigned.

Lazychem IDLC-45023
PubChem CID12940522
Name9,10-Dihydroergometrine
CAS RNNot listed
Molecular formulaC19H25N3O2
Molecular weight327.4 g/mol
IUPAC name(6aR,9R,10aR)-N-[(2S)-1-hydroxypropan-2-yl]-7-methyl-6,6a,8,9,10,10a-hexahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide
InChIKeyOIUFQILCIFKJNZ-BYMSMCERSA-N

02Structure identifiers

2D structurePubChem CID 12940522
Two-dimensional chemical structure of 9,10-Dihydroergometrine
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 4 rings, includes aromatic atoms, includes aliphatic carbon, has 4 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres4
Unassigned stereocentres0
Ring count4
Secondary amines0
Tertiary amines1
N-methyl amine sites1
SMILESC[C@@H](CO)NC(=O)[C@@H]1C[C@H]2[C@@H](CC3=CNC4=CC=CC2=C34)N(C1)C
InChINot listed
Formula from structureC19H25N3O2
Molecular weight from structure327.4 g/mol

03Stereochemistry

The published structure contains 4 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres4Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 16Before symmetry reduction

Published same-connectivity configurations

1 record

These records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

No additional structure-linked configuration with the same connectivity is currently present in the LazyChem dataset.

Scope: The mathematical 2^n value is only an upper bound. Symmetry and other stereogenic elements can change the number of distinct stereoisomers. A hypothetical configuration is not published as a compound record without a verified structure identity.

04Possible N-nitroso structures

Calculated from the exact published structure. These are structural screening candidates, not confirmed impurities, formation predictions or analytical findings.

Matched amine site1 candidate
Chemical structure of 9,10-Dihydroergometrine with the matched amine site highlighted in amber
Amber marks the secondary-amine nitrogen and its attached bonds, or the tertiary N-methyl bond used for the dealkylation screen.
First calculated candidateUnverified identity
First calculated possible N-nitroso structure derived from 9,10-Dihydroergometrine, with the new N-nitroso group highlighted in amber
The new N-N=O atoms and bonds are highlighted. No CAS number or compound name is assigned by this calculation.
Candidate 1N-demethylation, then nitrosation
Matched site
N atom 22, methyl carbon 24
Calculated formula
C18H22N4O3
Candidate SMILES
C[C@@H](CO)NC(=O)[C@@H]1C[C@@H]2c3cccc4[nH]cc(c34)C[C@H]2N(N=O)C1

Interpretation: A structural alert alone does not establish that a nitrosamine forms. Evaluate nitrite sources, amine reagents, pH, temperature, process sequence, purge and analytical evidence.

05India status for this compound

These results apply only to this exact compound name and CAS number. Confirm the current official instruments before making a regulatory decision.

NDPS / RCSNO EXACT MATCH FOUNDNo CAS number is available for an exact comparison.
SCOMETNO EXACT REVIEWED CAS MATCHNo CAS number is available for an exact comparison.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

06Names and relationships

Associated parent compound

No parent compound is listed.

Other names

No synonyms are listed.

Related records from the same parent family

No related records are linked by parent name.

07Documented history

Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.

No dated history available

No verified discovery, first report, occurrence, use or issue event is currently available for this identity.

08Sources