Description

3-Pentenoic Acid, 4-Hydroxy-, Methyl Ester (9Ci) is a specialized organic ester compound with the CAS registry number 127628-70-0. This chemical serves as a valuable building block and intermediate in advanced organic synthesis, enabling the creation of complex molecular architectures. It is primarily sought after by pharmaceutical, agrochemical, and fine chemical research and development teams for constructing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs) and complex natural product analogs.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and plant growth regulators.
• Fine Chemical Production: Serves as a precursor for flavors, fragrances, and specialty polymers requiring specific functional groups.
• Academic & Industrial Research: Employed in methodological development and as a model compound in organic chemistry and catalysis studies.
• Material Science: Potential monomer or cross-linking agent in the development of novel polymeric materials with tailored properties.

Basic Information

Product Name	3-Pentenoic Acid, 4-Hydroxy-, Methyl Ester (9Ci)
CAS No.	127628-70-0
Molecular Formula	C6H10O3
Molecular Weight	130.14 g/mol
Synonyms	Methyl 4-Hydroxy-3-pentenoate; 4-Hydroxy-3-pentenoic Acid Methyl Ester; Methyl 4-Hydroxypent-3-enoate; 3-Pentenoic acid, 4-hydroxy-, methyl ester; (E/Z)-Methyl 4-hydroxypent-3-enoate
EINECS	Contact for details

Quality Control

We maintain a rigorous quality management system to ensure batch-to-batch consistency and high purity. Our products undergo comprehensive analytical testing, including HPLC, GC, NMR, and IR spectroscopy, to verify identity and purity. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment. We can support development projects requiring compliance with cGMP and other relevant regulatory frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. For long-term storage, consider maintaining under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Isomeric Ratio (E/Z)	Specified on COA
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.