Ald-benzyl-PEG5-CH2 tBu-ester


The benzaldehyde group readily reacts with primary amines, aminooxy and hydrazide. T-Buty ester can be hydrolyzed to form a free acid that can be used to conjugate with amine-bearing molecules. The PEG spacer increase the solubility of the resulting complex in aqueous media.

Axispharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.

Section I. Identification of the substance

Product Name: Ald-benzyl-PEG5-CH2 tBu-ester
Catalog number: AP-10077
Supplier: AxisPharm, 9823Pacific Heights Blvd, Suite F, San Diego, CA 92121
Tel: 1-858-677-9432, Email:

Section II. Hazards identification

Classification – Notclassifiedasahazard

Section III. Composition and information on ingredients.

Name: Ald-benzyl-PEG5-CH2 tBu-ester
Formula: C21H32O8
MW: 412.47

Section IV. First aid measures

1. Skincontact:Immediately
persists, seek medicalattention.
2. Eye contact: Immediately wash skin with copious amounts of water for at least 15
minutes. Assureadequateflushingoftheeyesbyseparatingtheeyelidswith
fingers. If irritation persists, seek medicalattention.
3. Inhalation: Removetofreshair.Inseverecasesorifsymptomspersist,seekmedical
4. Ingestion: Washoutmouthwithcopiousamountsofwaterforatleast15minutes.Seek

Section V. Firefighting measures

In the event of a fire involving this material, alone or in combination with other materials, use dry
powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing
apparatus should be worn.

Section VI. Accidental release measures

Personal precautions: Wear suitable personal protective equipment which performs satisfactorily
and meets local/state/national standards.
Respiratory precaution: Wear approved mask/respirator
Hand precaution: Wear suitable gloves/gauntlets
Skin protection: Wear suitable protective clothing
Eye protection: Wear suitable eye protection
Methods for cleaning up:Mix with sand or similar inert absorbent material, sweep up and
keep in a tightly closed container for disposal. See section 12.
Environmental precautions: Do not allow material to enter drains or water courses.

Section VII. Handling and storage

Handling: This product should be handled only by, or under the close supervision of, those
properly qualified in the handling and use of potentially hazardous chemicals, who
should take into account the fire, health and chemical hazard data given on this

Section VIII. Exposure Controls / PPE

Engineering Controls: Use only in a chemical fume hood.
Personal protective equipment: Wear chemical-resistant gloves, safety goggles.
General hygiene measures: Wash thoroughly after handling. Wash contaminated clothing

Section IX.Physicalandchemicalproperties

liquidOdor: No data
Boilingpoint: Nodata
Melting point: No data
Flash point: No data
Density: No data
Molecular formula: C21H32O8
Molecular weight: 412.47

Section X. Stability and reactivity

Conditions to avoid: Heat, flames and sparks.
Materials to avoid: Oxidizing agents.
Possible hazardous combustion products: No data available.

Section XI. Toxicological information

No data

Section XII. Ecological information

No data

Section XIII. Disposal consideration

Arrange disposal as special waste, by licensed disposal company, in consultation with local
waste disposal authority, in accordance with national and regional regulations.

Section XIV. Transportation information

Non-hazardous for air and ground transportation.

Section XV. Regulatory information

Indication of Danger: No data.
Risk Statement: No data.
Safety Statement: In case of contact with eyes, rinse immediately with plenty of water and seek
medical advice. Wear suitable gloves and eye/face protection.

Section XVI. Other information

This MSDS is correct to the best of our knowledge and belief at the date of its publication
but does not purport to be all inclusive and shall be used only as a guide. AxisPharm shall
not be held liable for any loss, injury or damage which may result from its use. This
product is for research and development use only.