Fladrafinil – CRL-40,941
From €39.80
CRL-40,941 (Fladrafinil) is a synthetic compound closely related to Modafinil and Adrafinil, known for its wakefulness-promoting and cognitive-enhancing properties. It has gained attention for its ability to improve alertness, focus, and cognitive function by influencing dopamine and norepinephrine systems.
For a more detailed description and lab analysis, please see the sections below.

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Description
CRL-40,941 (Fladrafinil), Powder
CRL-40,941, commonly referred to as Fladrafinil, is an analog of Adrafinil, with similar effects but reported to have a stronger potency and bioavailability. Fladrafinil was developed to promote wakefulness, enhance cognitive performance, and improve focus without causing excessive stimulation or jitteriness. It is part of the eugeroic (wakefulness-promoting) class of compounds, similar to Modafinil, but is more efficiently metabolized in the body.
Fladrafinil primarily works by influencing the dopaminergic and adrenergic systems, inhibiting the dopamine transporter (DAT) and norepinephrine transporter (NET). This results in increased levels of dopamine and norepinephrine in the brain, which helps enhance wakefulness, focus, and cognitive performance, particularly during extended periods of mental or physical exertion.
Fladrafinil promotes wakefulness and cognitive enhancement by modulating the activity of dopamine and norepinephrine:
- Dopamine Reuptake Inhibition: By inhibiting the dopamine transporter (DAT), Fladrafinil increases the availability of dopamine in the brain, leading to improved motivation, focus, and cognitive performance.
- Norepinephrine Reuptake Inhibition: Fladrafinil also inhibits the norepinephrine transporter (NET), which boosts alertness and physical energy by increasing norepinephrine levels.
These actions help promote wakefulness and mental clarity without the overstimulation typically associated with traditional stimulants.
Effects:
- Enhanced Wakefulness: Fladrafinil promotes wakefulness, making it useful for tasks that require extended periods of mental alertness and physical endurance.
- Increased Focus and Cognitive Performance: By increasing dopamine and norepinephrine levels, Fladrafinil enhances focus, attention, and cognitive clarity.
- Improved Motivation and Energy: The modulation of dopamine and norepinephrine can improve mental drive and motivation, supporting productivity and performance during demanding tasks.
- Potentially Low Risk of Overstimulation: Fladrafinil offers stimulant-like benefits without excessive jitteriness or anxiety, making it a more balanced alternative to traditional stimulants.
Clinical Research:
- Wakefulness and Cognitive Function: Research on Adrafinil and Modafinil analogs, such as Fladrafinil, suggests that these compounds enhance wakefulness and cognitive performance, particularly in sleep-deprived or mentally fatigued conditions. Studies like those by Battleday and Brem (2015) support the wakefulness-promoting effects of these compounds.
- Dopamine Modulation: Research on dopamine re-uptake inhibitors indicates that compounds like Fladrafinil, by inhibiting dopamine re-uptake, can improve cognitive function and focus through enhanced dopamine availability.
Additional Effects:
- Cognitive Resilience: Fladrafinil’s ability to support wakefulness and focus over long periods may help maintain cognitive resilience during mentally demanding activities.
- Mood and Mental Drive: The compound’s impact on dopamine levels may support a positive mood and mental drive, enhancing performance in cognitively and physically demanding tasks.
For a detailed lab analysis and comprehensive product specifications, please refer to the sections below.
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From €29.11Chemical Informations
| Technical Information | |
|---|---|
| CAS Number | 90212-80-9 |
| PubChem CID | 13316557 |
| Purity | ≥98% |
| Molecular Weight | 325.33 g/mol |
| Molecular Formula | C₁₅H₁₃F₂NO₃S |
| Melting Point | 90-91°C |
| Synonyms | 2-{[Bis(4-fluorophenyl)methyl]sulfinyl}-N-hydroxyacetamide, Fladrafinil, Fluorafinil, 2-(bis(4-fluorophenyl)methylsulfinyl)-N-hydroxyacetamide |
| SMILES Notation | C1=CC(=CC=C1C(C2=CC=C(C=C2)F)S(=O)CC(=O)NO)F |
| Application | CRL-40,941 (Fladrafinil) is an eugeroic related to and of higher potency than adrafinil, with anticonflict properties. |
| Appearance | White to pale cream powder |
| Physical State | Solid |
| Solubility | – Poorly soluble in Water – Soluble to 5 mg/mL in Ethanol – Soluble to 10 mg/mL in Isopropanol |
| Storage Conditions | Store at room temperature or cooler, in a sealed airtight container, protected from heat, light, and humidity. |
| Stability | Stable for at least two years when stored as above. |

