Group Companies
Furthermore, to achieve sustainable growth through ESG management, we are also committed to investing in and fostering new businesses.

Holding company
Astena Holdings Co., Ltd.

| Company Name | Astena Holdings Co., Ltd. |
|---|---|
| Business Field | Group business management, etc. |
| Head Office |
8-2, Nihonbashi Honcho 4-chome, Chuo-ku, |
| Telephone |
+81-3-3279-0481 |
| Company Name | SPERA PHARMA, Inc. |
|---|---|
| Business Field | Pharmaceuticals Contract R&D and Manufacturing |
| Head Office |
17-85, Jusohonmachi 2-chome, Yodogawa-ku, |
| Company name | SPERA NEXUS, Inc. |
|---|---|
| Business field | Manufacture and sale of active pharmaceutical ingredients, etc. |
| Head Office |
8-2, Nihonbashi Honcho 4-chome, Chuo-ku, |
| Telephone |
+81-3-3279-0486 |
| Company name | Jitsubo Co., Ltd. |
|---|---|
| Business field | Development of peptide manufacturing process, Molecular Hiving ™ Contract manufacturing of APIs and Licensing |
| Head Office |
Life Science Research Center 4-1, |
| Telephone | +81-45-633-4327 |
| Company name | IWAKI SEIYAKU Co., Ltd. |
|---|---|
| Business field | Manufacturing and selling of ethical drugs, OTC drugs |
| Head Office |
8-2, Nihonbashi Honcho 4-chome, Chuo-ku, |
| Telephone | +81-3-3668-1570 |
| Company name | IWAKI SEIYAKU SAKURA FACTORY Co., Ltd. |
|---|---|
| Business field | Manufacturing and selling of ethical drugs, OTC drugs |
| Head Office |
2183-1, Teranosaku, Ota, Sakura-shi, |
| Telephone | +81-43-485-7111 |
| Company name | Meltex Inc. |
|---|---|
| Business field | Manufacture and sales of surface finishing chemicals Manufacture and sales of chemicals for the electronics industry Design, installation, and sales of chemical equipment Analysis and recovery of chemicals and metals Manufacture and sales of plant for manufacturing printed-wiring boards |
| Head Office |
8-2, Nihonbashi Honcho 4-chome, Chuo-ku, |
| Telephone | +81-3-3279-0671 |





