Import 5, 6, 7, 8-Tetrahydropuinoline — Buy in Bulk from Supplier in China

5, 6, 7, 8-tetrahydroquinoline (CAS 10500-57-9, molecular formula C9H11N, molecular weight 133.19 g/mol) is a partially hydrogenated heterocyclic amine with a bicyclic structure comprising a fused piperidine and benzene ring. The compound is a colourless to pale yellow liquid or low-melting solid at room temperature, depending on crystalline form and purity. Ningbo Sunyear Chem Co., Ltd supplies this material from their facility on Zhongshan Road in Ningbo, Zhejiang province, a location within one of China's established fine chemical manufacturing clusters with port access for international shipment.

The material serves as a building block in pharmaceutical synthesis, particularly for quinoline-derived APIs, and as an intermediate in agrochemical and specialty chemical production. The tetrahydroquinoline core provides a scaffold for further functionalisation through electrophilic substitution at the aromatic ring or N-alkylation. Typical industrial grades range from 98% to 99.5% purity, with higher purity requirements for GMP-regulated pharmaceutical applications. The compound's boiling point (typically 220-240°C at atmospheric pressure) and density (approximately 1.02-1.05 g/cm³) influence distillation and handling protocols. Storage under inert atmosphere with moisture exclusion is standard practice for amine-containing intermediates to prevent oxidation and colour degradation.

Buyers span API manufacturers, contract research organisations, and agrochemical formulators. Ningbo Sunyear Chem Co., Ltd offers this compound with flexible MOQ, though exact minimum quantities require direct confirmation. The supplier indicates compliance with international quality standards, but specific certification (ISO 9001, GMP, REACH registration status) must be verified with the company. Packaging typically uses UN-certified drums with argon or nitrogen padding for air-sensitive materials. Shipping terms from Ningbo port are negotiable, with FOB and CIF commonly available for Chinese fine chemical exports. Lead times depend on batch scheduling and current order book status.

Ningbo Sunyear Chem Co., Ltd is located at Zhongshan Road 315, Ningbo 315040, China. The supplier holds an imported tier classification with harbor trust status. Response metrics show 0.00% response rate with zero average response hours, indicating no inquiry interaction data is available. The address places the company in Ningbo's urban core rather than an outlying chemical industrial park, which may imply trading office, R&D facility, or contracted manufacturing arrangement rather than integrated production.

The supplier profile does not disclose founding date, number of employees, annual turnover, manufacturing facility details, or named customers. No specific quality management system certifications, environmental compliance records, or audit credentials are stated. Buyers should verify business registration with Ningbo Municipal Administration, confirm whether the company holds a hazardous chemicals business licence (essential for this product category), and determine whether production is in-house or outsourced to commissioned manufacturers. DUNS registration, export record history, and any existing REACH or FDA dossier filings should be checked directly with the supplier.