| Supplier | Phone | Fax | Country | Inquiry contact |
|---|---|---|---|---|
| Merck Schuchardt OHG | +49-8102-802 0 | +49-8102-802 175 | Germany | REQUEST |
| Santa Cruz Biotechnology, Inc. | +1 214-902-3910 | USA | REQUEST | |
| Sigma-Aldrich International GmbH | +41 81 755 28 28 | +41 81 755 28 15 | Switzerland | REQUEST |