(19alpha)-3,4,5,6,16,17-hexadehydro-16-(methoxycarbonyl)-19-methyloxayohimbanium (4S,4aR,14aS)-4-methyl-1-[(methyloxy)carbonyl]-4a,5,14,14a-tetrahydro-4H-indolo[2,3-a]pyrano[3,4-g]quinolizin-6-ium-13-ide 18786-24-8 CHEBI:9119 Serpentine (alkaloid) methyl (19alpha)-19-methyl-3,4,5,6,16,17-hexadehydro-18-oxayohimban-4-ium-1-ide-16-carboxylate methyl (19alpha)-19-methyl-3,4,5,6,16,17-hexadehydrooxayohimban-4-ium-1-ide-16-carboxylate serpentine CAS 18786-24-8

Purity 97%+In StockPharmaceutical Standards
CAS No.18786-24-8
Molecular FormulaC21H20N2O3
Molecular Weight348.40 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(19alpha)-3,4,5,6,16,17-hexadehydro-16-(methoxycarbonyl)-19-methyloxayohimbanium (4S,4aR,14aS)-4-methyl-1-[(methyloxy)carbonyl]-4a,5,14,14a-tetrahydro-4H-indolo[2,3-a]pyrano[3,4-g]quinolizin-6-ium-13-ide 18786-24-8 CHEBI:9119 Serpentine (alkaloid) methyl (19alpha)-19-methyl-3,4,5,6,16,17-hexadehydro-18-oxayohimban-4-ium-1-ide-16-carboxylate methyl (19alpha)-19-methyl-3,4,5,6,16,17-hexadehydrooxayohimban-4-ium-1-ide-16-carboxylate serpentine CAS 18786-24-8 chemical structure

Description

(19alpha)-3,4,5,6,16,17-hexadehydro-16-(methoxycarbonyl)-19-methyloxayohimbanium (4S,4aR,14aS)-4-methyl-1-[(methyloxy)carbonyl]-4a,5,14,14a-tetrahydro-4H-indolo[2,3-a]pyrano[3,4-g]quinolizin-6-ium-13-ide 18786-24-8 CHEBI:9119 Serpentine (alkaloid) methyl (19alpha)-19-methyl-3,4,5,6,16,17-hexadehydro-18-oxayohimban-4-ium-1-ide-16-carboxylate methyl (19alpha)-19-methyl-3,4,5,6,16,17-hexadehydrooxayohimban-4-ium-1-ide-16-carboxylate serpentine (CAS 18786-24-8) is a high-purity analytical reference standard with the molecular formula C21H20N2O3 and a molecular weight of 348.40 g/mol.

Structurally, (19alpha)-3,4,5,6,16,17-hexadehydro-16-(methoxycarbonyl)-19-methyloxayohimbanium (4S,4aR,14aS)-4-methyl-1-[(methyloxy)carbonyl]-4a,5,14,14a-tetrahydro-4H-indolo[2,3-a]pyrano[3,4-g]quinolizin-6-ium-13-ide 18786-24-8 CHEBI:9119 Serpentine (alkaloid) methyl (19alpha)-19-methyl-3,4,5,6,16,17-hexadehydro-18-oxayohimban-4-ium-1-ide-16-carboxylate methyl (19alpha)-19-methyl-3,4,5,6,16,17-hexadehydrooxayohimban-4-ium-1-ide-16-carboxylate serpentine (C21H20N2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 348.40 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC21H20N2O3
Molecular Weight348.40 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962
Nitrogen Atoms2

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