Spirochlorphine
Aliases: Spc, R-6890
Summary
Marketed only as a research chemical with potency reported as 2-5 times that of fentanyl. Reported solubility approximately 3 mg/mL in 10% ethanol/PG solution. Users stress volumetric dosing and allergy testing because a 10-fold error spans the entire active range.
Dose Information
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Peak | Offset |
|---|---|---|---|
| Insufflated | 5-15 min | 30-90 min | 2-4 hrs |
| Intravenous | 1-5 min | 30-90 min | 2-4 hrs |
Effect Profile
Scores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Opioid
7.9
Intense
8/10
Strong euphoria and pain relief with moderate itching/nausea, mild sedation
Euphoria / Warmth
×3
10
physical euphoria
cognitive euphoria
euphoria
warmth
Analgesia
×2
8
pain relief
analgesia
Sedation / Relaxation
×1
5
sedation
muscle relaxation
Itching / Nausea
×1
6
nausea
constipation
Based on reports from:
Tolerance
Build-up
develops within days of regular use; analgesic tolerance faster than respiratory depression tolerance
Reset
7–14 days for partial reset; full reset may take weeks — tolerance loss greatly increases overdose risk
Cross-Tolerances
Effects
Positive
- Physical euphoria
- Pain relief
- Stimulation
- Analgesia
- Muscle relaxation
Negative
- Respiratory depression
- Nausea
- Sedation
- Itchiness
- Pupil constriction
Positive
- Cognitive euphoria
- Anxiety suppression
- Reduced anxiety
- Wakefulness
- Motivation enhancement
- Euphoria
Negative
- Compulsive redosing
- Constipation
- Motivation suppression
- Anxiety
Positive
- Warmth
- Increased music appreciation
- Increased libido
Negative
- Appetite suppression
- Light sensitivity
- Disinhibition
- Dehydration
- Dulled perception
- Internal hallucination
- Warm flush
Combinations
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