Research use only. This vendor supplies peptides for laboratory and research purposes — not for human consumption or therapeutic use. PeptideBase does not endorse or guarantee product quality. Verify third-party lab testing before any research use.
No certificates of analysis on file
We hold no lab results for Nantong Guangyuan Chemical Co., Ltd. yet — neither independently sourced nor self-published. That is a gap in our record, not a finding about product quality.
- Publishes COAs
- Yes
- Named lab
- Janoshik Analytical
- Last checked
- 6 Jul 2026
About
Direct manufacturer and exporter of research-grade peptides, SARMs, and raw compounds based in Nantong, China. Operates GMP-standard facility with peptide synthesis, tableting, and formulation capabilities. All products independently tested by Janoshik Analytical with COAs available.
#Testing disclosure
- Publishes COAs
- Yes
- COA access
- Published on the vendor’s website
- Named lab(s)
- Janoshik Analytical
- Last observed
- 6 Jul 2026
Research catalog
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PeptideBase. (2026). Nantong Guangyuan Chemical Co., Ltd. — Research Vendor Profile. Retrieved July 29, 2026, from https://peptidebase.io/research-vendors/nantong-guangyuan-chemical-co-ltd