Buy 4F-MPH Pellets 25mg Online
Buy 4F-MPH pellets 25mg are a unit presentation of 4-fluoromethylphenidate, methyl 2-(4-fluorophenyl)-2-(piperidin-2-yl)acetate. The 25 mg figure is labeled fill weight, not a dose. The copy below does not include administration instructions or human-use claims. Free base and hydrochloride are different weights. It is not a 30 mg pellet.
Introduction
4F-MPH pellets 25mg contain methyl 2-(4-fluorophenyl)-2-(piperidin-2-yl)acetate. It is a methylphenidate analogue. A fluorine sits at the para position of the phenyl ring, and the ester is methyl. It is not methylphenidate, which has no fluorine, and it is not 4F-EPH, which has an ethyl ester. The molecule has two stereocenters. The usual research material is the (±)-threo racemate. The COA must state the isomer. It is the same compound as 4F-MPH powder and the 30 mg pellet. The unit is a pellet.
It has been sold as a designer stimulant and is not an approved medicine. Each pellet is labeled 25 mg. That number is the declared content of the unit. It is not a recommended amount for any use, and it is not equivalent to a 30 mg pellet of the same form. The label must state free base versus hydrochloride. The free base weighs 251.30 g·mol−¹. A hydrochloride weighs more. Excipients must be listed, because the pellet mass is not the same as the active content.
Key features and benefits – Buy 4F-MPH Pellets 25mg
- Defined 4-fluoro methylphenidate. The para-fluoro group is the structural difference from methylphenidate.
- Unit fill. A pellet declares 25 mg, which supports content checks without weighing bulk powder.
- Documented identity. CAS 1354631-33-6, formula C14H18FNO2.
- Same identity as the 30 mg pellet. The labeled content is different.
- Laboratory-only handling. Intended for controlled chemical and in vitro work, not for formulation or human administration.
Specifications of Buy 4F-MPH Pellets 25mg
| Property | Detail |
|---|---|
| Product name | 4F-MPH pellets 25 mg |
| Chemical name | Methyl 2-(4-fluorophenyl)-2-(piperidin-2-yl)acetate |
| Synonyms | 4F-MPH; 4-fluoromethylphenidate |
| CAS number | 1354631-33-6 |
| Molecular formula | C14H18FNO2 |
| Molar mass | 251.30 g·mol−¹ |
| Related compounds | Methylphenidate, the unsubstituted parent; 4F-EPH, the ethyl ester analogue |
| Stereochemistry | (±)-threo is the usual form. Confirm on the COA |
| Labeled content | 25 mg per pellet. Free base or hydrochloride must be stated |
| Excipients | As stated on the label or COA |
| Storage | Sealed container, cool, dry, protected from light. The ester can hydrolyze if moist |
| Intended use | Laboratory research only |
Applications in research
Appropriate uses are non-clinical and institutionally approved:
- Content-uniformity and assay checks on a labeled 25 mg pellet.
- HPLC, LC-MS, and NMR identification of 4F-MPH after extraction.
- Forensic differentiation from methylphenidate, 4F-EPH, and from a 30 mg pellet of the same compound.
- Comparison of pellet fill with powder of the same CAS.
Do not describe or imply oral use, insufflation, or any other human route. Do not treat 25 mg as a dose.
Purity and testing
A defensible product claim rests on the batch certificate and an assay of the pellet.
- HPLC of the extracted fill for chromatographic purity and for assayed content against the 25 mg label, with retention that separates threo and erythro if both are possible.
- 1H NMR or 19F NMR for the para-fluoro aromatic pattern and the methyl ester. An ethyl ester means 4F-EPH.
- Mass spectrometry for the free-base molecular ion consistent with C14H18FNO2.
- Explicit statement of free base or hydrochloride, and of whether 25 mg is salt weight or free-base equivalent.
- Statement of stereochemistry.
- Excipient list, and a check that fillers do not co-elute with the active.
Store the COA with the lot number. Do not use a methylphenidate CAS number for this pellet, and do not copy a 30 mg assay onto a 25 mg unit.
Disclaimer
For laboratory research use only. Not for human or veterinary consumption, not for diagnostic or therapeutic use, and not a food, drug, or cosmetic. The 25 mg marking is fill weight, not a dosing instruction. 4F-MPH is covered by the Psychoactive Substances Act in the United Kingdom, is restricted under the German NpSG, and is Schedule III in Canada. Methylphenidate is a controlled substance in many jurisdictions, and analogue rules may apply. Buyers are responsible for confirming legality, licensing, import rules, and institutional approval before ordering or handling. Handle with standard laboratory PPE and dispose of waste under local hazardous-chemical rules. No statement on this page is a claim of safety, efficacy, or fitness for any human application.
Frequently asked questions
What is in the pellet?
The active is 4-fluoromethylphenidate, methyl 2-(4-fluorophenyl)-2-(piperidin-2-yl)acetate. Fillers must be listed separately.
What does 25 mg mean?
It is the declared amount per pellet. It is not a recommended dose, and it is not a 30 mg pellet. The COA must say whether that 25 mg is free base or hydrochloride.
Is this the same as methylphenidate or the powder?
It is the same compound as 4F-MPH powder. It is not methylphenidate, which has no fluorine. 4F-EPH has an ethyl ester. 4F-MPH is CAS 1354631-33-6, C14H18FNO2, 251.30 g·mol−¹. It has two stereocenters. The COA should state threo or erythro.
Which CAS number applies?
CAS 1354631-33-6. Confirm free base versus salt, and confirm the isomer.
How should pellets be stored?
Sealed, cool, dry, and protected from light. The ester can hydrolyze if moist. Keep the lot number with the COA.
Can they be used in humans?
No. They are not an approved medicine and are not sold for consumption. Check local law before purchase.
What analytical methods confirm identity?
HPLC assay against the 25 mg label, with diastereomer resolution, 19F NMR for the para-fluoro pattern, and mass spectrometry consistent with C14H18FNO2. An ethyl ester signal means the sample is not 4F-MPH. The COA should state salt form and stereochemistry so the labeled mass is not read as free-base content.




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