1,2,3,6-Tetrahydropyridazine-3,6-Dione

Produced by Ouchi Shinko Chemical Industrial Co., Ltd.

1,2,3-Tri-o-Tolylguanidine

1,2,3-Tri-o-Methylphenylguanidine

Produced by Ouchi Shinko Chemical Industrial Co., Ltd.

1,2,3-Triphenylguanidine

Produced by Ouchi Shinko Chemical Industrial Co., Ltd.

1,3-Bis(2-Benzothiazolyl)Guanidine

Produced by Ouchi Shinko Chemical Industrial Co., Ltd.

1,3-Di-o-Biphenylguanidine

Produced by Ouchi Shinko Chemical Industrial Co., Ltd.

Benzothiazole

Produced by Matsugaki Chemical Industries Co., Ltd.