Supplier Page from Aladdin Scientific Corporation for 2-Bromocyclopent-2-enone
2,4-Dimethoxy-1-nitrobenzene from Aladdin Scientific Corporation
2-Hydroxyimino-2-phenylacetonitrile, mixture of syn and anti from Aladdin Scientific Corporation
Itaconic acid from Aladdin Scientific Corporation
N,N'-Di(1-naphthyl)benzidine (purified by sublimation) from Aladdin Scientific Corporation