Import 5-Chlorotryptophan Hydrochloride — Buy in Bulk from Supplier in China

5-Chlorotryptophan Hydrochloride is an analytical reference standard supplied by Hebei Tianao Technology Co., Ltd from China, classified within the tryptamine chemical family. The molecular formula is C11H12ClN as given in the source, indicating a halogenated tryptophan derivative with the chlorine substituent at the 5-position of the indole ring and the hydrochloride salt form to improve aqueous solubility and stability. The compound is presented as a fine white crystalline powder, a physical form consistent with recrystallised amino acid salts.

The hydrochloride salt form is significant for reference standards because salt selection affects solubility profile, hygroscopicity, and chromatographic behaviour. Typical preparation involves controlled crystallisation from aqueous HCl or acidified organic solvent systems, followed by drying under vacuum to residual solvent levels meeting ICH Q3C guidelines. Purity is described as high without a numerical percentage in the source; for analytical standards, typical specifications demand at least 98% purity by qNMR or HPLC-UV with documented uncertainty. The 5-chloro substitution pattern is specifically relevant to serotonin metabolism research because it introduces a metabolically stable halogen that resists hydroxylation, making it useful as a tracer or mechanistic probe.

Primary users are neuropharmacology and metabolomics research groups studying serotonin pathways, biotechnology companies developing serotonin receptor ligands, and contract analytical laboratories validating bioanalytical methods. The supplier mentions flexible MOQ without fixed values, so researchers should confirm gram-scale availability for method development and larger quantities for batch release or inter-laboratory studies. Storage requires cool, dry conditions away from direct sunlight, standard for light-sensitive indole-containing compounds. Buyers should confirm whether the supplier provides a certificate of analysis with assigned purity, expiry or retest date, and traceability to a primary pharmacopoeial standard.

Hebei Tianao Technology Co., Ltd is based in China with an imported supplier tier and harbor trust tier designation, indicating a standard marketplace listing without advanced verification. The response rate is recorded at 0.00% with no average response hours logged, which means buyer communication history is absent rather than negative. The company name suggests a technology-oriented enterprise, though the source does not clarify whether operations centre on synthesis, distribution, or a hybrid model.

No facility address, manufacturing scope, employee count, revenue, or certification details appear in the provided data. ISO or SGS claims referenced in the source description cannot be verified from the facts given and should be treated as unconfirmed until documentation is supplied. Buyers should request a company profile, business licence, and any quality system certificates with scope and validity dates. Given the specialised nature of analytical reference standards, determine whether Hebei Tianao Technology manufactures this compound in-house or sources from a contracted synthesis partner, as this affects batch-to-batch consistency and change-control reliability.