Safety data sheets go straight to the document

Sigma-Aldrich and Merck links now land on the exact product and SDS page instead of a search results list, and open in a fraction of a second. Alfa Aesar, Acros Organics, Innovating Science, Hanna Instruments and Formlabs bottles get a real safety data sheet link for the first time. The scheduled verifier now backfills every current supplier product in bounded batches, while confirmed and manually attached SDS PDFs are preserved and fully transcribed across all 16 standard sections for future enrichment.