| 1944 |
- Sumitomo Chemical Co., Ltd. diversified into pharmaceuticals.
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| 1961 |
- Sumitomo Chemical launched cholorquine preparations.
*Click here to see the harmful incident concerning chloroquine.
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| 1984 |
- Sumitomo Pharmaceuticals Co., Ltd., established on February 6, 1984, from the Research, Development, and Manufacturing divisions of Sumitomo Chemical Co.,Ltd.'s pharmaceuticals business, as well as the Pharmaceuticals Sales division of Inabata & Co.,Ltd., the sole distributor of Sumitomo Chemical Company's pharmaceuticals. The new company opened for business on October 1.
- INTEBAN® CREAM (topical analgesic and anti-inflammatory drug) launched.
- SEPATREN® (cephalosporin antibiotic) launched.
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| 1985 |
- Construction of Ehime Bio Plant completed.
- ALMARL® (therapeutic agent for hypertension, angina pectoris, and arrhythmia) launched.
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| 1987 |
- SUMIFERON® (natural alpha interferon) launched.
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| 1989 |
- DOPS® (noradrenaline-activating neural function ameliorant) launched.
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| 1990 |
- DIDRONEL® (bone metabolism enhancer) launched.
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| 1991 |
- Construction of Osaka Distribution Center completed.
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| 1993 |
- Feed additive business transferred.
- AMLODIN® (therapeutic agent for hypertension and angina pectoris) launched.
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| 1995 |
- MEROPEN® (carbapenem antibiotic) launched.
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| 1996 |
- SEDIEL® (serotonin-agonist anti-anxiety drug) launched.
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| 1997 |
- Construction of New Tokyo Distribution Center (present Tokyo Distribution Center) completed.
- Sumitomo Pharmaceuticals UK Limited established.
- Beijing Office opened.
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| 1999 |
- GROWJECT® (rDNA human growth hormone) launched.
- Veterinary drug business transferred.
- Sumitomo Pharmaceuticals America Limited established.
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| 2000 |
- Responsibility for bulk pharmaceutical sales transferred.
- Marketing of HIBITANE® (disinfectant) started.
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| 2001 |
- LULLAN® (antipsychotic) launched.
- Marketing of TAGAMET® (H2-receptor antagonist) started.
- Sumitomo Seiyaku Biomedical Co., Ltd. opened for business.
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| 2003 |
- Production of bulk pharmaceuticals transferred from Sumitomo Chemical; Oita Plant established.
- Sumitomo Pharmaceutical (Suzhou) Co., LTD. established.
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| 2004 |
- Twentieth anniversary of the foundation of the company commemorated.
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| 2005 |
- OTC drug business transferred.
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