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MERRIFIELD RESIN

CAS No.: 55844-94-5
Formula: C40H32N3O3R
Molecular Weight: 602.70038
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  • Description
  • Basic Info
  • Safety Info
  • MSDS
  • Price
What is MERRIFIELD RESIN

Merrifield Resin is a high-quality, cross-linked polystyrene-based resin widely used in solid-phase peptide synthesis (SPPS). Developed by Robert Bruce Merrifield, a Nobel Prize-winning chemist, this resin serves as a robust and versatile support matrix for the stepwise assembly of peptides. Its unique structure allows for efficient coupling and deprotection reactions, enabling the synthesis of complex peptides with high purity and yield. Merrifield Resin is chemically stable, compatible with a wide range of solvents, and can be functionalized with various linkers to accommodate diverse peptide sequences. Ideal for research and industrial applications, it remains a cornerstone in peptide chemistry, driving advancements in drug discovery and biotechnology.

Preparation Process: Merrifield Resin is prepared by chloromethylating polystyrene beads cross-linked with divinylbenzene (DVB). First, polystyrene-DVB beads are swollen in an inert solvent like dichloroethane. A chloromethylating agent, such as chloromethyl methyl ether (MOMCl) or a formaldehyde/HCl mixture, is added with a Lewis acid catalyst (e.g., SnCl₄ or ZnCl₂). The reaction proceeds at room temperature or slightly elevated temperatures (25–50°C) for several hours. The resulting chloromethylated resin is washed thoroughly with solvents (e.g., DMF, methanol, dichloromethane) to remove unreacted reagents. The degree of functionalization is determined by elemental analysis or titration. The resin is stored dry or in a solvent for further use.

Usage Scenarios: Merrifield Resin is a cross-linked polystyrene polymer functionalized with chloromethyl groups, widely used in solid-phase peptide synthesis (SPPS). It serves as an insoluble support for anchoring amino acids via their C-termini, enabling stepwise peptide chain elongation. The resin’s high swelling capacity in organic solvents facilitates reagent diffusion and reaction efficiency. After synthesis, peptides are cleaved from the resin using strong acids like TFA. Merrifield Resin is favored for its stability, ease of handling, and compatibility with Boc (tert-butoxycarbonyl) and Fmoc (fluorenylmethyloxycarbonyl) protection strategies. It also finds applications in combinatorial chemistry, small-molecule synthesis, and immobilizing catalysts or reagents.

MERRIFIELD RESIN Basic Info
Chemical Name MERRIFIELD RESIN
Synonyms PL-CMS RESIN;CL-CH2-RESIN;PL-CMS MP-RESIN;MERRIFIELD RESIN;CLCH2-PH-POLYMER;MERRIFIELD CO DVB;MERRIFIELD'S RESIN;MERRIFIELD POLYMER;CHLOROMETHYL RESIN;MERRIFIELD RESIN LL
CAS No. 55844-94-5
Molecular Formula C40H32N3O3R
Molecular Weight 602.70038
PSA 0.00000
LogP 8.37060
Safely Info
RTECS -
Hazard Class -
Safety Statements 26-36-24/25-22
HS Code 39039000
WGK Germany -
Packing Group -
RIDADR -
Risk Statements 36/37/38
Hazard Codes Xi
Caution Statement P261-P305+P351+P338
Hazard Declaration H315-H319-H335
Symbol GHS07
Signal Word Warning
MERRIFIELD RESIN Price
United States: $100-$200
China: $50-$100
Russia: No results
Germany: $150-$250
India: $80-$150
Japan: $200-$300
Brazil: $50-$100
South Korea: $100-$200
Philippines: $80-$150
United Kingdom: $150-$250
France: $150-$250
Mexico: $50-$100
Canada: $100-$200
South Africa: $80-$150
Egypt: $50-$100
Turkey: $80-$150
Thailand: $80-$150
Indonesia: $50-$100
MSDS
MSDS

Section 1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE
  Product identifiers
    : Merrifield′s peptide resin
    Product name
    CAS-No.        : 55844-94-5    
  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
    Not a hazardous substance or mixture according to Regulation (EC) No. 1272/2008.
    This substance is not classified as dangerous according to Directive 67/548/EEC.
  Label elements
  According to European Directive 67/548/EEC as amended.
    Hazard symbol(s)        none    
    R-phrase(s)        none    
    S-phrase(s)
    S22        Do not breathe dust.    
    S24/25        Avoid contact with skin and eyes.    
  Other hazards - none

Section 3. COMPOSITION/INFORMATION ON INGREDIENTS
  Substances
    Synonyms        : Chloromethylated styrene-divinylbenzene resin    
    Polystyrene crosslinked with divinylbenzene, chloromethylated
    Copolymer of styrene and divinylbenzene, chloromethylated
    Poly(styrene-co-vinylbenzyl chloride-co-divinylbenzene)
    Chloromethylated polystyrene
    Chloromethylated stryene/divinylbenzene copolymer
    Formula        : C25H25Cl    
    Molecular Weight        : 360,9 g/mol    

Section 4. FIRST AID MEASURES
  Description of first aid measures
  If inhaled
    If breathed in, move person into fresh air. If not breathing, give artificial respiration.
  In case of skin contact
    Wash off with soap and plenty of water.
  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.
  Most important symptoms and effects, both acute and delayed
    To the best of our knowledge, the chemical, physical, and toxicological properties have not been
    thoroughly investigated.
  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, Hydrogen chloride gas
  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
    Avoid dust formation. Avoid breathing vapors, mist or gas.
  Environmental precautions
    Do not let product enter drains.
  Methods and materials for containment and cleaning up
    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
    Provide appropriate exhaust ventilation at places where dust is formed.Normal measures for preventive fire
    protection.
  Conditions for safe storage, including any incompatibilities
    Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
  Specific end uses
    no data available

Section 8. EXPOSURE CONTROLS/PERSONAL PROTECTION
  Control parameters
  Components with workplace control parameters
  Exposure controls
  Appropriate engineering controls
    General industrial hygiene practice.
  Personal protective equipment
  Eye/face protection
    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.
  Body Protection
    Choose body protection in relation to its type, to the concentration and amount of dangerous
    substances, and to the specific work-place., The type of protective equipment must be selected
    according to the concentration and amount of the dangerous substance at the specific workplace.
  Respiratory protection
    Respiratory protection is not required. Where protection from nuisance levels of dusts are desired,
    use type N95 (US) or type P1 (EN 143) dust masks. Use respirators and components tested and
    approved under appropriate government standards such as NIOSH (US) or CEN (EU).

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        no data available    
    point
    f) Initial boiling point and no data available
    boiling range
    g) Flash point        no data available    
    h) Evaporation 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) Autoignition        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
    no data available
  Possibility of hazardous reactions
    no data available
  Conditions to avoid
    no data available
  Incompatible materials
    Strong oxidizing agents
  Hazardous decomposition products
    Other decomposition products - no data available

Section 11. TOXICOLOGICAL INFORMATION
  Information on toxicological effects
  Acute toxicity
    no data available
  Skin corrosion/irritation
    no data available
  Serious eye damage/eye irritation
    no data available
  Respiratory or skin sensitization
    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
    no data available
  Specific target organ toxicity - single exposure
    no data available
  Specific target organ toxicity - repeated exposure
    no data available
  Aspiration hazard
    no data available
  Potential health effects
  Inhalation        May be harmful if inhaled. May cause respiratory tract irritation.    
  Ingestion        May be harmful if swallowed.    
  Skin        May be harmful if absorbed through skin. May cause skin irritation.    
  Eyes        May cause eye irritation.    
  Signs and Symptoms of Exposure
    To the best of our knowledge, the chemical, physical, and toxicological properties have not been
    thoroughly investigated.
  Additional Information
    RTECS: Not available

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
    no data available
  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.
  Contaminated packaging
    Dispose of as unused product.

Section 14. TRANSPORT INFORMATION
  UN number
    ADR/RID: -        IMDG: -        IATA: -    
  UN proper shipping name
    ADR/RID: Not dangerous goods
    IMDG: Not dangerous goods
    IATA:        Not dangerous goods    
  Transport hazard class(es)
    ADR/RID: -        IMDG: -        IATA: -    
  Packaging group
    ADR/RID: -        IMDG: -        IATA: -    
  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