Methylphenidate hydrochloride
Also known as: 2-Piperidineacetic acid, α-phenyl-, methyl ester, hydrochloride, 2-Piperidineacetic acid, α-phenyl-, methyl ester, hydrochloride (1:1), 2-Piperidineacetic acid, α-phenyl-, methyl ester, hydrochloride, (R*,R*)- (±)-, Ciba 4311b, Concerta, Metadate, Methyl α-phenyl-2-piperidineacetate hydrochloride, Methyl phenyl(piperidin-2-yl)acetate hydrochloride (1:1), Methylphenidate HCl, Ritalin hydrochloride, a-Phenyl-2-piperidineacetic Acid Methyl Ester Hydrochloride
Methylphenidate hydrochloride (CAS 298-59-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H20ClNO2 and a molecular weight of 269.767 g/mol. Key properties include a melting point of 224 - 226ºC, a boiling point of 327.6ºC at 760 mmHg and a flash point of 152ºC. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed and H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 298-59-9
- Jingsj CID
- J-1524019-2
- Molecular Formula
- C14H20ClNO2
- Molecular Weight
- 269.767 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 224 - 226ºC |
|---|---|
| Boiling Point | 327.6ºC at 760 mmHg |
| Flash Point | 152ºC |
| Exact Mass | 269.118256 |
| PSA | 38.33000 |
| LogP | 3.21610 |
| Vapor Pressure | 0.000199mmHg at 25°C |
| Refractive Index | 1.523 |
| Storage Conditions | Store at RT |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents, alkalies, barbiturates. |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H334 — May cause allergy or asthma symptoms if inhaled
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Methylphenidate hydrochloride?
The CAS number of Methylphenidate hydrochloride is 298-59-9.
What are the molecular formula and molecular weight of Methylphenidate hydrochloride?
Methylphenidate hydrochloride has molecular formula C14H20ClNO2 and molecular weight 269.767 g/mol.
Is Methylphenidate hydrochloride hazardous?
Methylphenidate hydrochloride has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H334 — May cause allergy or asthma symptoms if inhaled.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methylphenidate hydrochloride (CAS 298-59-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1524019-2 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.