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Methyl hydrogen phthalate is used as a phthalate ester metabolite, linked to precocious puberty.
ML Bender.; F Chloupek.; MC Neveu. Intramolecular Catalysis of Hydrolytic Reactions. III. Intramolecular Catalysis by Carboxylate Ion in the Hydrolysis of Methyl Hydrogen Phthalate1, 2. J. Am. Chem. Soc.1958, 80 (20), 5384-5387.
V Rao.; PV Ashokan.; MH Shridhar. Studies on the compatibility and specific interaction in cellulose acetate hydrogen phthalate(CAP) and poly methyl methacrylate (PMMA) blend. Polymer.1999, 40 (25), 7167-7171.
Undergoes a modified Curtius rearrangement via a mixed anhydride. The resulting isocyanate has been cyclized with, e.g. alanine to give chiral quinazoline-2,4-dione derivatives: Heterocycles, 36, 1305 (1993):
Hazard Statements: H315-H319-H335
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Precautionary Statements: P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362-P501c
Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant