Profile: Shanghai Hanhong Chemical Co., Ltd. specializes in the sales, R&D and manufacture of chemicals. Our products include amino acids & derivatives, peptides, resins & reagents for peptide synthesis, saccharides, natural extracts, enzymes, chiral reagents, RNA, DNA phosphoramidites, oligodeoxynucleotides, oligonucleotides, purine, pyrimidines & derivatives. Our basic chemical building blocks include benzimidazoles, oxadiazoles, thiazines, quinuclidines, quinoxalines, isoquinolines, indazoles, homopiperidines, benzothiophenes and benzofurans. We can provide custom synthesis products from grams, kilograms to tons, especially heterocyclic building blocks and chiral chemicals.