Import 3-Cyclopentene-1-Carboxylic Acid Methyl Ester — Buy in Bulk from Supplier in China

3-cyclopentene-1-carboxylic acid methyl ester (CAS 58101-60-3) is the methyl ester derivative of 3-cyclopentene-1-carboxylic acid, carrying molecular formula C7H10O2. Supplied by Shenzhen Penking Biochemical Technology Co., Ltd. from Shenzhen, Guangdong, this compound presents as a liquid at ambient conditions with the ester functionality providing altered solubility and reactivity profiles compared to the free acid. The methyl ester protects the carboxylic acid during synthetic operations and serves as a versatile building block where subsequent saponification or transesterification is desired. The supplier holds imported-tier classification with harbor-tier trust status, and the current platform response metrics show zero activity, indicating direct contact planning is essential.

Industrial preparation typically involves Fischer esterification of the corresponding acid with methanol under acid catalysis, or transesterification from higher alkyl esters. Standard commercial purity falls in the 98-99 percent range (typical), with the ester group conferring enhanced lipophilicity and improved compatibility with non-polar reaction media. The compound remains stable under neutral and basic conditions but undergoes hydrolysis in the presence of aqueous acid or base, regenerating the free carboxylic acid. Flash point and vapour pressure data are not provided by the supplier and should be requested for safety assessment, though typical values for comparable methyl esters suggest flash points around 60-80 degrees Celsius and moderate volatility at elevated temperature.

Primary applications span pharmaceutical intermediate synthesis, particularly where the methyl ester participates as a masked carboxylate in multi-step sequences, and agrochemical formulation where the ester's physical properties favour formulation stability. Research laboratories and custom synthesis companies represent the core buyer segments. The listing indicates FOB and CIF Incoterms are available, with flexible MOQ structures, though exact minimum quantities are unstated. Packaging options are described as variable to suit needs. Buyers should obtain specific purity certificates, stability data, and packaging specifications before committing to purchase, and should anticipate potentially extended initial response times from this supplier.

Shenzhen Penking Biochemical Technology Co., Ltd. is located at 6a, Building B, Xili Sport Center, Zhugu, Shenzhen 518055, Guangdong Province, China. The supplier operates under imported-tier classification with harbor-tier trust status, which represents an entry-level trust designation on the platform. Current response metrics indicate a 0.00 percent response rate and zero average response hours, strongly suggesting that inbound platform enquiries are not being monitored or answered through this channel. Buyers should not rely on platform messaging alone and should instead use direct email, telephone, or WeChat contact during Chinese business hours (UTC+8) to establish initial communication.

The company profile provides no information about manufacturing scale, reactor capacity, quality control laboratory equipment, number of employees, annual turnover, or client portfolio. The physical address within a sport centre complex rather than a designated chemical industrial park may indicate trading, warehousing, or light processing activities rather than primary chemical synthesis. The listing for 3-cyclopentene-1-carboxylic acid methyl ester references ISO and SGS compliance without certificate numbers or dates, and mentions FOB and CIF trade terms. No specific MOQ, price, or lead time is disclosed. Buyers should treat all claims as requiring independent verification and request documentary evidence before advancing to sample or trial order stages.