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Naproxen

CAS No.: 22204-53-1
Formula: C14H14O3
Molecular Weight: 230.26
Suppliers: All(0) China Suppliers(13) Products(73)
  • Description
  • Basic Info
  • Safety Info
  • MSDS
  • Price
  • Related Product
  • Supplier Reference
What is Naproxen

**Introduction to Naproxen** Naproxen is a widely used nonsteroidal anti-inflammatory drug (NSAID) that helps relieve pain, reduce inflammation, and lower fever. It is commonly prescribed for conditions such as arthritis, menstrual cramps, muscle aches, and mild to moderate pain. Available in both prescription and over-the-counter forms, naproxen works by inhibiting the production of prostaglandins, chemicals in the body that cause inflammation and pain. While effective, it should be used with caution, as long-term use may increase the risk of gastrointestinal, cardiovascular, or kidney issues. Always follow dosage instructions and consult a healthcare provider before use, especially for individuals with pre-existing medical conditions or those taking other medications.

Preparation Process: Naproxen is synthesized via a multi-step process: 1. **Friedel-Crafts Acylation**: 2-Methoxynaphthalene reacts with propionyl chloride in the presence of aluminum chloride to yield 2-methoxy-6-propionylnaphthalene. 2. **Demethylation**: The methoxy group is removed using hydrobromic acid, producing 6-propionyl-2-naphthol. 3. **Resolution**: The racemic mixture is resolved using a chiral base (e.g., cinchonidine) to isolate the (S)-enantiomer. 4. **Esterification and Hydrolysis**: The (S)-enantiomer is esterified, then hydrolyzed to yield Naproxen. 5. **Purification**: Recrystallization from ethanol or water ensures high purity. Key reagents include propionyl chloride, AlCl₃, HBr, and chiral resolving agents. Yield and purity are optimized by controlling reaction conditions.

Usage Scenarios: Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, inflammation, and stiffness caused by conditions such as arthritis, gout, menstrual cramps, tendinitis, bursitis, and mild to moderate headaches. It works by inhibiting enzymes (COX-1 and COX-2) that produce prostaglandins, reducing pain and swelling. Available in oral tablets, liquid gels, and extended-release formulations, it is also used for acute pain like muscle aches and dental discomfort. Naproxen provides longer-lasting relief compared to some other NSAIDs, typically requiring fewer doses per day. It should be used cautiously in patients with heart, kidney, or gastrointestinal issues due to potential side effects.

Naproxen Basic Info
Chemical Name Naproxen
Synonyms NAPROXEN BASE;(S)-NAPROXEN;(S)-2-(6-Methoxynaphthalen-2-yl)propanoic acid;Naprosyn;NAPROXENE;NAPROXEN FREE BASE;axer;Bonyl;Xenar;Naxen
CAS No. 22204-53-1
Molecular Formula C14H14O3
Molecular Weight 230.26
PSA 46.53000
LogP 3.03650
Safely Info
RTECS UF5275000
Hazard Class 6.1(b)
Safety Statements 36/37-45-16-7-26
HS Code 29189900
WGK Germany 3
Packing Group III
RIDADR UN 2811 6.1/PG 3
Risk Statements 22-39/23/24/25-23/24/25-11-36/37/38
Hazard Codes Xn,T,F
Caution Statement P202-P273-P301+P312-P302+P352-P305+P351+P338-P308+P313
Hazard Declaration H302-H315-H319-H335-H361fd-H411
Symbol GHS07,GHS08,GHS09
Signal Word Warning
Naproxen Price
Here is a rough price range for Naproxen in the listed countries. Note that prices can vary based on dosage, brand, and local market conditions:

- **United States**: $10–$50
- **China**: $5–$20
- **Russia**: $3–$15
- **Germany**: $8–$30
- **India**: $2–$10
- **Japan**: $10–$40
- **Brazil**: $5–$25
- **South Korea**: $7–$30
- **Philippines**: $3–$15
- **United Kingdom**: $8–$35
- **France**: $7–$30
- **Mexico**: $5–$20
- **Canada**: $10–$40
- **South Africa**: $4–$20
- **Egypt**: $3–$15
- **Turkey**: $4–$18
- **Thailand**: $3–$12
- **Indonesia**: $2–$10

If no specific price range is available for a country, it is marked as "No results." Let me know if you need further clarification!
MSDS
MSDS

SECTION 1: Identification of the substance/mixture and of the company/undertaking
  Product identifiers
    Product name        : Naproxen    
    REACH No.        : A registration number is not available for this substance as the substance    
    or its uses are exempted from registration, the annual tonnage does not
    require a registration or the registration is envisaged for a later
    registration deadline.
    CAS-No.        : 22204-53-1    
  Relevant identified uses of the substance or mixture and uses advised against
    Identified uses        : Laboratory chemicals, Manufacture of substances    
  
  

SECTION 2: Hazards identification
  Classification of the substance or mixture
  Classification according to Regulation (EC) No 1272/2008
    Acute toxicity, Oral (Category 3), H301
    For the full text of the H-Statements mentioned in this Section, see Section 16.
  Classification according to EU Directives 67/548/EEC or 1999/45/EC
    Xn Harmful        R22    
    For the full text of the R-phrases mentioned in this Section, see Section 16.
  Label elements
  Labelling according Regulation (EC) No 1272/2008
    Pictogram
    Signal word        Danger    
    Hazard statement(s)
    H301        Toxic if swallowed.    
    Precautionary statement(s)
    P301 + P310        IF SWALLOWED: Immediately call a POISON CENTER or doctor/    
    physician.
    Supplemental Hazard        none    
    Statements
  Other hazards - none

SECTION 3: Composition/information on ingredients
  Substances
    Chemical characterization : Natural product
    Synonyms        : (S)-(+)-2-(6-Methoxy-2-naphthyl)propionic acid    
    (S)-(+)-6-Methoxy-α-methyl-2-naphthaleneacetic acid
    Formula        : C14H14O3    
    Molecular Weight        : 230,26 g/mol    
    CAS-No.        : 22204-53-1    
    EC-No.        : 244-838-7    
  Hazardous ingredients according to Regulation (EC) No 1272/2008
    Component        Classification        Concentration    
  Naproxen
    CAS-No.        22204-53-1        Acute Tox. 3; H301        <= 100 %    
    EC-No.        244-838-7    
  Hazardous ingredients according to Directive 1999/45/EC
    Component        Classification        Concentration    
  Naproxen
    CAS-No.        22204-53-1        Xn, R22        <= 100 %    
    EC-No.        244-838-7    
    For the full text of the H-Statements and R-Phrases mentioned in this Section, see Section 16

SECTION 4: First aid measures
  Description of first aid measures
  General advice
    Consult a physician. Show this safety data sheet to the doctor in attendance.
  If inhaled
    If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.
  In case of skin contact
    Wash off with soap and plenty of water. Take victim immediately to hospital. Consult a physician.
  In case of eye contact
    Flush eyes with water as a precaution.
  If swallowed
    Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.
  Most important symptoms and effects, both acute and delayed
    The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in
    section 11
  Indication of any immediate medical attention and special treatment needed
    no data available

SECTION 5: Firefighting measures
  Extinguishing media
  Suitable extinguishing media
    Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
  Special hazards arising from the substance or mixture
    Carbon oxides
  Advice for firefighters
    Wear self contained breathing apparatus for fire fighting if necessary.
  Further information
    no data available

SECTION 6: Accidental release measures
  Personal precautions, protective equipment and emergency procedures
    Wear respiratory protection. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure
    adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust.
    For personal protection see section 8.
  Environmental precautions
    Prevent further leakage or spillage if safe to do so. Do not let product enter drains.
  Methods and materials for containment and cleaning up
    Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed
    containers for disposal.
  Reference to other sections
    For disposal see section 13.

SECTION 7: Handling and storage
  Precautions for safe handling
    Avoid contact with skin and eyes. Avoid formation of dust and aerosols.
    Provide appropriate exhaust ventilation at places where dust is formed.Normal measures for preventive fire
    protection.
    For precautions see section 2.2.
  Conditions for safe storage, including any incompatibilities
    Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
  Specific end use(s)
    A part from the uses mentioned in section 1.2 no other specific uses are stipulated

SECTION 8: Exposure controls/personal protection
  Control parameters
  Components with workplace control parameters
  Exposure controls
  Appropriate engineering controls
    Avoid contact with skin, eyes and clothing. Wash hands before breaks and immediately after handling
    the product.
  Personal protective equipment
  Eye/face protection
    Face shield and safety glasses Use equipment for eye protection tested and approved under
    appropriate government standards such as NIOSH (US) or EN 166(EU).
  Skin protection
    Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique
    (without touching glove's outer surface) to avoid skin contact with this product. Dispose of
    contaminated gloves after use in accordance with applicable laws and good laboratory practices.
    Wash and dry hands.
    The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and
    the standard EN 374 derived from it.
    Full contact
    Material: Nitrile rubber
    Minimum layer thickness: 0,11 mm
    Break through time: 480 min
    Material tested:Dermatril® (KCL 740 / Z677272, Size M)
    Splash contact
    Material: Nitrile rubber
    Minimum layer thickness: 0,11 mm
    Break through time: 480 min
    Material tested:Dermatril® (KCL 740 / Z677272, Size M)
    data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 87300,     test method: EN374
    If used in solution, or mixed with other substances, and under conditions which differ from EN 374,
    contact the supplier of the CE approved gloves. This recommendation is advisory only and must
    be evaluated by an industrial hygienist and safety officer familiar with the specific situation of
    anticipated use by our customers. It should not be construed as offering an approval for any
    specific use scenario.
  Body Protection
    Complete suit protecting against chemicals, The type of protective equipment must be selected
    according to the concentration and amount of the dangerous substance at the specific workplace.
  Respiratory protection
    Where risk assessment shows air-purifying respirators are appropriate use a full-face particle
    respirator type N99 (US) or type P2 (EN 143) respirator cartridges as a backup to engineering
    controls. If the respirator is the sole means of protection, use a full-face supplied air respirator. Use
    respirators and components tested and approved under appropriate government standards such
    as NIOSH (US) or CEN (EU).
  Control of environmental exposure
    Prevent further leakage or spillage if safe to do so. Do not let product enter drains.

SECTION 9: Physical and chemical properties
  Information on basic physical and chemical properties
    a) Appearance        Form: powder    
    Colour: white
    b) Odour        no data available    
    c) Odour Threshold        no data available    
    d) pH        no data available    
    e) Melting point/freezing        Melting point/range: 152 - 154 °C - lit.    
    point
    f) Initial boiling point and no data available
    boiling range
    g) Flash point        no data available    
    h) Evapouration rate        no data available    
    i) Flammability (solid, gas) no data available
    j) Upper/lower        no data available    
    flammability or
    explosive limits
    k) Vapour pressure        no data available    
    l) Vapour density        no data available    
    m) Relative density        no data available    
    n) Water solubility        no data available    
    o) Partition coefficient: n- no data available
    octanol/water
    p) Auto-ignition        no data available    
    temperature
    q) Decomposition        no data available    
    temperature
    r) Viscosity        no data available    
    s) Explosive properties        no data available    
    t) Oxidizing properties        no data available    
  Other safety information
    no data available

SECTION 10: Stability and reactivity
  Reactivity
    no data available
  Chemical stability
    Stable under recommended storage conditions.
  Possibility of hazardous reactions
    no data available
  Conditions to avoid
    no data available
  Incompatible materials
    Strong oxidizing agents, Strong bases
  Hazardous decomposition products
    Other decomposition products - no data available
    In the event of fire: see section 5

SECTION 11: Toxicological information
  Information on toxicological effects
  Acute toxicity
    LD50 Oral - rat - 248 mg/kg
  Skin corrosion/irritation
    no data available
  Serious eye damage/eye irritation
    no data available
  Respiratory or skin sensitisation
    no data available
  Germ cell mutagenicity
    no data available
  Carcinogenicity
    IARC:        No component of this product present at levels greater than or equal to 0.1% is identified as    
    probable, possible or confirmed human carcinogen by IARC.
  Reproductive toxicity
    Laboratory experiments have shown teratogenic effects.
  Specific target organ toxicity - single exposure
    no data available
  Specific target organ toxicity - repeated exposure
    no data available
  Aspiration hazard
    no data available
  Additional Information
    RTECS: UF5275000
    Ingestion may provoke the following symptoms:, Constipation., heartburn, Abdominal pain, Nausea,
    Headache, Dizziness, Drowsiness, Itching, skin eruptions, ecchymoses, tinnitus, pulmonary edema,
    Oedema, Shortness of breath, To the best of our knowledge, the chemical, physical, and toxicological
    properties have not been thoroughly investigated.

SECTION 12: Ecological information
  Toxicity
    no data available
  Persistence and degradability
    no data available
  Bioaccumulative potential
    no data available
  Mobility in soil
    no data available
  Results of PBT and vPvB assessment
    PBT/vPvB assessment not available as chemical safety assessment not required/not conducted
  Other adverse effects
    no data available

SECTION 13: Disposal considerations
  Waste treatment methods
  Product
    Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed
    professional waste disposal service to dispose of this material. Dissolve or mix the material with a
    combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber.
  Contaminated packaging
    Dispose of as unused product.

SECTION 14: Transport information
  UN number
    ADR/RID: 2811        IMDG: 2811        IATA: 2811    
  UN proper shipping name
    ADR/RID: TOXIC SOLID, ORGANIC, N.O.S. (Naproxen)
    IMDG: TOXIC SOLID, ORGANIC, N.O.S. (Naproxen)
    IATA:        Toxic solid, organic, n.o.s. (Naproxen)    
  Transport hazard class(es)
    ADR/RID: 6.1        IMDG: 6.1        IATA: 6.1    
  Packaging group
    ADR/RID: III        IMDG: III        IATA: III    
  Environmental hazards
    ADR/RID: no        IMDG Marine pollutant: no        IATA: no    
  Special precautions for user
    no data available



SECTION 15 - REGULATORY INFORMATION
N/A


SECTION 16 - ADDITIONAL INFORMATION
N/A
SDS 1.0
Naproxen Suppliers
Company Name
Business Type
Location
Details
China Shandong Qingdao
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China Shaanxi Xi'an
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China Shaanxi Xi'an
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China Shaanxi Xi'an
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China
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China Zhejiang Hangzhou
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China Hainan Haikou
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