Removing a single-source dependency without changing the filing
The situation
The molecule was supplied from a single manufacturing site. The site performed well, but an interruption would have stopped a commercial product, and no alternative had been qualified because doing so competed with higher-priority internal work.
How the program was structured
- Mapped the chain upstream and found the nominal alternative drew its key starting material from the same producer
- Screened candidate sites on route, capacity and documentation status rather than price first
- Ran an on-site audit at the preferred alternative and drove findings to closure before approval
- Prepared the regulatory variation in parallel so the second source could actually be activated, not merely identified
What made the difference
The decisive step was mapping beyond the first tier. Two suppliers that looked independent on the approved-vendor list shared an upstream producer, so the original dual-sourcing plan would not have provided the protection it appeared to.
