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N-tris(Hydroxymethyl)methyl-4-aminobutanesulfonic acid CAS 54960-65-5It is a biological buffer
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Bisphenol S CAS 80-09-1It is mainly used as a monomer for synthesizing polysulfone resin
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3-AMINO-4-HYDROXYBENZOIC ACID CAS1571-72-8Used as intermediate of azo and sulfur dyes, and used in making photographic paper
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4-Amino-2,6-dihydroxypyrimidine CAS873-83-6Caffeine, theophylline, SDM used as pharmaceutical intermediates