| Supplier | Phone | Fax | Country | Inquiry contact |
|---|---|---|---|---|
| Evonik Industries AG | +49-6221-8653 0 | +49-6221-8697 06 | Germany | REQUEST |
| Merck Schuchardt OHG | +49-8102-802 0 | +49-8102-802 175 | Germany | REQUEST |
| WeylChem ORGANICA GmbH | +49-(0)3494-39212-0 | +49-(0)3494-39212-11 | Germany | REQUEST |