{"hq_id":"hq-c-org-001996","name":"F-53B (6:2 chlorinated polyfluorinated ether sulfonate)","context":"human_adult","risk_level":"high","schema":"legacy","note":"Synthesis unavailable: compound lacks vectorizable regulatory classifications. Raw safety data returned.","data":{"risk_level":"high","summary":"Bioaccumulation comparable to PFOS. Very long biological half-life (estimated >10 years). Liver toxicity, thyroid disruption, immunotoxicity in animal studies. Detected in human blood globally."},"meta":{"synthesis_version":"n/a","timestamp":"2026-05-01T19:33:54.238Z"}}