Porphyroxine (Morphinan Alkaloid · Opium Minor · Forensic Reference)
| Compound | Porphyroxine (Methyl-neopine; 3-Methyl-6β-hydroxymorphinan analogue) |
| Class | Alkaloid — Morphinan (Isoquinoline subclass) |
| CAS | 4017-67-2 |
| Molecular formula | C₁₉H₂₁NO₄ |
| Primary sources | Papaver somniferum (opium poppy) |
| Plant part | Capsule latex |
| Claim strength | Emerging |
| Key applications | Forensic chemistry; alkaloid profiling; informational-only |
| Buy from Herbuno | Informational reference — see HerbIQ Compound Index → |
Name origin: Porphyroxine (also porphyroxin) appears in classical alkaloid literature as a minor opium constituent first characterised in the 19th century during systematic fractionation of crude opium. The name derives from the purple-red (porphyra = purple) colour reactions it produced in early colorimetric alkaloid tests. Traditional use: None — porphyroxine is a minor trace alkaloid of Papaver somniferum with no independent traditional medicinal use. Its concentration in opium is well below pharmacologically relevant levels. Research trajectory: Porphyroxine is primarily a forensic chemistry reference compound — it appears in comprehensive alkaloid fingerprint databases for crude opium analysis and is used to distinguish P. somniferum varieties and geographic origins. Modern high-resolution mass spectrometry and NMR have refined its structural characterisation. Safety context: As a Papaver somniferum alkaloid, porphyroxine is subject to opiate regulatory frameworks by analogy, though its pharmacological activity is poorly characterised and presumed minimal given its structural distance from high-affinity opioid receptor ligands.
Pharmacological and Chemical Profile of Porphyroxine
Structural characterisation: Porphyroxine is a morphinan skeleton alkaloid distinguished from related morphinans by methylation and hydroxylation patterns on the phenanthrene ring system. Its precise structure has been refined through modern spectroscopic analysis, resolving earlier structural ambiguities from classical alkaloid chemistry. Claim strength: Moderate (analytical chemistry).
Pharmacological profile: No systematic opioid receptor binding or in vivo pharmacological studies are available for porphyroxine specifically. By structural analogy with related morphinans, some degree of mu-opioid receptor affinity is plausible, but this has not been confirmed in published research. It is treated as pharmacologically inactive at naturally occurring opium concentrations. Claim strength: Emerging.
Forensic chemistry utility: Porphyroxine is detected in comprehensive opium alkaloid profiles by LC-MS/MS and GC-MS, appearing as a minor peak in the morphinan alkaloid region. Its inclusion in forensic alkaloid reference databases allows differentiation of P. somniferum chemotypes and geographic origins alongside neopine, codeine, morphine, and thebaine. Claim strength: Moderate (analytical chemistry).
Historical documentation: Porphyroxine's entry in classical alkaloid literature (particularly Manske's Alkaloids series) provides pharmacognosy reference context for researchers studying the full chemical diversity of one of pharmacy's most important plants. Claim strength: Moderate (historical/chemical).
This compound is documented for research and formulator education purposes. For commercially available botanical ingredients, explore the HerbIQ Compound Index →
Regulatory and Formulator Context
Porphyroxine has no supplement, food, or cosmetic application. It is documented here as part of the comprehensive HerbIQ Papaver alkaloid reference series for formulator and researcher education.
As a Papaver somniferum-derived alkaloid, porphyroxine falls within opiate regulatory frameworks by association in most jurisdictions, even though it lacks demonstrated opioid pharmacological activity.
Researchers requiring porphyroxine as an analytical reference standard for forensic chemistry or pharmacognosy purposes should consult specialist alkaloid reference standard suppliers with appropriate institutional authorisation.
The HerbIQ Papaver series comprehensively documents the chemical ecology of P. somniferum, from major therapeutic alkaloids (morphine, codeine, papaverine, noscapine) through forensic markers (laudanosine, laudanine, porphyroxine, pseudomorphine) to biosynthetic intermediates (reticuline, thebaine/oripavine).
Frequently Asked Questions — Porphyroxine
What is porphyroxine's relationship to the major opium alkaloids?
Porphyroxine is a minor morphinan alkaloid of Papaver somniferum — sharing the phenanthrene ring skeleton of morphine, codeine, and thebaine but differing in its oxygenation and substitution pattern. It occurs at trace concentrations (typically well below 0.1% of crude opium alkaloids) and is not pharmacologically significant at naturally occurring levels.
Why does porphyroxine appear in forensic opium databases?
Comprehensive forensic opium analysis uses full alkaloid fingerprinting, including minor constituents, to characterise P. somniferum varieties and geographic origins. Minor alkaloids like porphyroxine, laudanosine, and neopine have diagnostic ratios relative to major alkaloids that vary by growing region and variety, providing chemotypic discrimination beyond what major alkaloid ratios alone can achieve.
Has porphyroxine been studied for any pharmacological activity?
Not systematically. Classical alkaloid literature noted its isolation and basic properties; modern pharmacological receptor profiling has not been published for porphyroxine specifically. It is structurally related to active morphinans and may have some opioid receptor affinity, but this is unquantified and of no practical pharmacological significance at natural exposure levels.
Is porphyroxine one of the newer synthetic opioids?
No. Porphyroxine is an old, naturally occurring plant alkaloid first documented in classical 19th-century opium alkaloid fractionation studies. It should not be confused with synthetic designer opioids (fentanyl analogues, nitazenes) that represent the current public health crisis in illicit drug markets. Porphyroxine is a minor natural constituent with no abuse liability or street market presence.
Related compounds: Laudanosine, Neopine, Pseudomorphine, Codeine
Claim-strength scale – High = multiple human RCTs; Moderate = limited trials or strong preclinical convergence; Emerging = early-stage lab or animal data.
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