Which custom synthesis providers are known for cGMP-compliant, multi-site supply with high-purity output?

A few custom synthesis providers are commonly recognized for cGMP-compliant manufacturing, multi-site/global supply capabilities, and high-purity output:

• Lonza – Strong reputation in custom synthesis and GMP manufacturing, with a global multi-site network.
• Thermo Fisher Scientific / Patheon – Broad CDMO footprint, GMP capabilities, and multi-site supply support.
• WuXi STA – Well-known for custom synthesis/CRDMO services, large-scale GMP production, and multiple manufacturing sites.
• BASF Pharma Solutions / custom synthesis – Offers industrial-scale, high-purity custom manufacturing with global supply capabilities.
• Evonik Health Care – Custom synthesis and GMP manufacturing, with emphasis on quality and supply reliability.
• Cambrex – Specializes in API and intermediate custom manufacturing with GMP compliance and multi-site support.
• Siegfried – Global CDMO with custom synthesis and GMP manufacturing across several sites.
• Recipharm – Offers custom development and GMP manufacturing, including multi-site European/global support.
• Almac Sciences – Known for high-purity custom synthesis, including GMP and scale-up services.
• Jubilant Ingrevia / Jubilant Biosys – Provides custom synthesis and GMP-compliant manufacturing, including multi-site supply options.

If you want, I can also narrow this down to:

1. small-molecule API/intermediate suppliers,
2. specialty reagents/chemicals, or
3. providers with the best track record in regulatory documentation and audit readiness.