5-Nitroisophthalic acid (5-NIPA) CAS-No. 618-88-2 SYNONYMS: 5-Nitrobenzene-1,3-dicarboxylic acid 5-Nitro-1,3-benzene dicarboxylic acid DESCRIPTION: White to off-white powder Assay (HPLC) min99% Melting Point 260~264 C Loss on Drying max1.0% Residue after Ignition max0.1% Isophthalic Acid (HPLC) max 0.5% area mono-Methyl 5-nitroisophthalate CAS-No. 1955-46-0 SYNONYMS: Monomethyl 5-nitrobenzene-1,3-dicarboxylate 5-Nitroisophthalic acid monomethyl ester Appearance: Off-white solid powder Assay (HPLC) min98% Melting Point 181~183 C Loss on Drying max 0.5% Dimethyl 5-nitroisophthalate CAS-No. 13290-96-5 SYNONYMS: Dimethyl 5-nitrobenzene-1,3-dicarboxylate 5-Nitroisophthalic acid dimethyl ester 5-Nitro-1,3-benzene dicarboxylic acid dimethyl ester Appearance: Off-white to white needle crystals Assay (HPLC) min99% Melting Point 122~126 C Loss on Drying max0.5% Ash max0.1% 4-Nitro-N-methylphthalimide CAS-No. 41663-84-7 SYNONYMS:2-Methyl-5-nitro-1H-isoindole-1,3(2H)dione; N-Methyl-4-nitrophthalimide DESCRIPTION: Pale-yellow crystalline powder Assay (HPLC) min 99 % Melting Point 178~180 C Loss on drying max 0.5% 4-Nitrophthalimide CAS-No. 89-40-7 SYNONYMS: 5-nitro-1H-isoindole-1,3(2H)-dione; 4-nitro-1,2-benzenedicarboxylicacid,imide; DESCRIPTION: Pale-yellow crystals Assay (HPLC) min99% Melting Point 201~204 C Loss on Drying max0.5% 5-Amino-2,4,6-triiodoisophthalic acid CAS-No. 89-40-7 SYNONYMS: 5-Amino-2,4,6-triiodobenzene-1,3-dioic acid; 5-Atipa DESCRIPTION: Slightly brown or slightly yellow powder Assay (based on dry substance) 66.8~68.8 % Melting Point 265~270 C Free iodine max 0.01% Free iodide max 0.1% Water (K. F. titration) max 1.0% Purity (HPLC, area) min 98.5 % Any other individual impurity [HPLC] max 0.5 % area Total sum of impurities [HPLC] max 1.5 % area Waiting for cooperation all the time. Nathan Taizhou A