Full List of API Manufacturers in Japan (2025)

Cokey Co., Ltd.

Kanda Kaneko BLDG 1F,
45. Kanda Higashi Matsushita-Cho,
Chiyoda-Ku, Tokyo 101-0042

Tel: (81)3-6271-7951
Fax: (81)3-6271-7952
http://www.cokey.co.jp

Daiichi Sankyo

3-5-1, Nihonbashi-honcho, Chuo-ku,
Tokyo 103-8426

Tel: +81-3-6225-1111
https://www.daiichisankyo.com/

Daito Pharmaceutical

326 Yokamachi, Toyama City,
Toyama Prefecture 939-8567

Tel: 076 (421) 5665
https://www.daitonet.co.jp/

Eisai Co. Ltd.

Kashima Plant:
14-14 Sunayama, Kamisu,
Ibaraki 314-0255, Japan

Phone: +81 479-46-1155
https://www.eisai.com

Fuji Chemical Industries Co., Ltd.

Head Office & Plant:
55 Yokohoonji, Kamiichi-machi,
Nakaniikawa-gun, Toyama
930-0355, Japan
Tel: +81(0)76-472-2323
Fax: +81(0)76-472-2330

Gohkakizawa Plant :
1 Gohkakizawa, Kamiichi-machi,
Nakaniikawa-gun, Toyama
930-0405, Japan
Tel: +81(0)76-472-2323
Fax: +81(0)76-472-2330

Web: https://www.fujichemical.co.jp/

FUJIFILM Wako Pure Chemical Corporation

1-2 Doshomachi 3-Chome, Chuo-ku,
Osaka 540-8605, Japan

Tel: +81-6-6203-3741
https://www.fujifilm.com/ffwk/

Fujimoto Chemicals Co., Ltd.

Headquarters:
4-5-13 Doshomachi,Chuo-ku,Osaka-City,
Osaka, 541-0045, Japan
Sales Division:
Tel: +81-6-6201-1681
Fax: +81-6-6228-0468
Administration Division:
Tel: +81-6-6222-0147
Fax:+81-6-6201-5630

Tokyo Branch:
4-1-12 Nihonbashihon-chou, Chuo-ku,
Tokyo, 103-0023, Japan
Tel: +81-3-3231-5580
Fax: +81-3-3231-5583

Kinraku Plant, Laboratory:
1-2-38 Kinrakuji-cho, Amagasaki-City,
Hyogo, 660-0806, Japan
Tel: +81-6-6482-3111
Fax: +81-6-6482-3115

Senboku Plant:
1-24 Rinkai-cho, Izumiotsu-City,
Osaka, 595-0075, Japan
Tel: +81-725-33-1901
Fax:+81-725-33-1905

Web: https://www.fujimoto-chem.co.jp

Fukuzyu Pharmaceutical Co Ltd.

48, Hagiwara, Toyama,
939-8261, Japan

Tel: +81-76-429-1151
Fax: +81-76-429-6553
https://www.fkj.co.jp/

Hamari Chemicals, Ltd.

2-1-26, Kitahama, Chuo-ku,
Osaka 541-0041, Japan

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Tel: +81-6-6205-7755
Fax: +81-6-6205-7222
E-mail: ask@hamari.co.jp
https://www.hamarichemicals.com/

Hovione Japan

GRAND GREEN OSAKA North BLDG,
JAM BASE 4F, 6-38 Ofuka-cho, Kita-ku,
Osaka-shi, Osaka
Japan

Tel: +81 6 6131 4619
www.hovione.co.jp

Japan Sopharchim Co., Ltd.

2-2-3, Iwamoto-Cho Chiyoda-ku, Tokyo,
101-0032 Japan

Tel: +81-3-3866-0934
Fax: +81-3-3863-3615
https://www.chemiphar.co.jp

Kanto Chemical Co., Ltd

2-1, Nihonbashi Muromachi 2-chome,
Chuo-ku, Tokyo,103-0022, Japan

Telephone: +81-3-6214-1092
Fax: +81-3-3241-1053
https://www.kanto.co.jp/

Koa Shoji Co., Ltd.

13-15, Hiyoshi 7-chome, Kohoku-ku,
Yokohama-shi, Kanagawa 223-0061,
Japan

Tel: +81-45-560-6607
https://www.koashoji-hd.com

Katsura Chemical Co., Ltd.

4-15-19 Hibarigaoka, zama-shi,
Kanagawa 252-0003, JAPAN

Tel: +81-(0)46-251-0948
Fax: +81-(0)46-256-6071
https://www.katsura-chemical.co.jp/

Kikkoman Biochemifa Company

2-1-1 Nishi-Shinbashi, Minato-ku,
Tokyo 105-0003, Japan

Parks Tower 5F (Namba Parks), 2-10-70,
Namba-Naka, Naniwa-ku, Osaka,
556-0011, Japan

Web: https://biochemifa.kikkoman.com

Kissei Pharmaceutical Co Ltd

19-48, Yoshino, Matsumoto,
Nagano 399-8710, Japan

Phone +81-(0)263-25-9081
Fax +81-(0)263-25-7899
https://www.kissei.co.jp/

KM Biologics Co. Ltd

1-6-1 Okubo, Kita-ku, Kumamoto-shi,
Kumamoto 860-8568, Japan

Tel: +81-96-344-2755
https://www.kmbiologics.com

Kohjin Bio Co., Ltd.

5-1-3, Chiyoda, Sakado-shi,
Saitama 350-0214, Japan

Tel:+81-49-284-3781
Fax:+81-49-284-4784(Main)
Tel: +81-49-288-6208(Product related)
Tel: +81-49-289-2000
FAX: +81-49-284-3682 (Regenerative medicine cell processing business)
https://kohjin-bio.jp

Kongo Chemical Co Ltd.

3,Himata,Toyama City,
Toyama 930-0912, Japan

Tel: (076) 423-3131
Fax: (076) 421-8044
http://www.kongo-chemical.co.jp