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CAS No 536-25-4 , methyl 3-amino-4-hydroxybenzoate

  • Name: methyl 3-amino-4-hydroxybenzoate
  • Synonyms: Methyl m-amino-p-hydroxybenzoate; Orthoderm;Orthoform; Aminobenz; Methyl 4-hydroxy-3-aminobenzoate;methyl 3-amino-4-hydroxybenzoate; Orthocaine; 536-25-4;
  • CAS Registry Number:
  • Melting Point: 141-143
  • Flash Point: 151.4°C
  • Boiling Point: 326.8°Cat760mmHg
  • Density: 1.305g/cm3
  • Refractive index: 1.605
  • Safety Statements: Poison by intraperitoneal route. Moderately toxic by ingestion. See also ESTERS. When heated to decomposition it emits toxic fumes of NOx.
  • Hazard Symbols: Xi
  • Flash Point: 151.4°C
  • EINECS: 208-627-3
  • Molecular Weight: 167.16196
  • InchiKey: VNQABZCSYCTZMS-UHFFFAOYSA-N
  • InChI: InChI=1S/C8H9NO3/c1-12-8(11)5-2-3-7(10)6(9)4-5/h2-4,10H,9H2,1H3
  • Molecular Formula: C8H9NO3
  • Molecular Structure:CAS No:536-25-4 methyl 3-amino-4-hydroxybenzoate

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References of methyl 3-amino-4-hydroxybenzoate
Title: Orthocaine
CAS Registry Number: 536-25-4
CAS Name: 3-Amino-4-hydroxybenzoic acid methyl ester
Synonyms: methyl 3-amino-4-hydroxybenzoate
Trademarks: Orthoform (Winthrop); Orthoform New
Molecular Formula: C8H9NO3
Molecular Weight: 167.16
Percent Composition: C 57.48%, H 5.43%, N 8.38%, O 28.71%
Literature References: Prepd by dissolving 3-amino-4-hydroxybenzoic acid in methanol, saturating with HCl gas: Einhorn, Pfyl, Ann. 311, 46 (1900); DE 97333; Chem. Zentralbl. 1898, II, 525. Also prepd by reduction of methyl 3-nitro-4-hydroxybenzoate with aluminum amalgam: Auwers, R?hrig, Ber. 30, 991 (1897); with tin and HCl or with stannous chloride and alcoholic HCl: DE 97334; Chem. Zentralbl. 1898, II, 526.
Properties: Needles from benzene, mp 143°. When crystallized from chloroform it sometimes assumes an allotropic form, mp 111°, which on melting changes to the normal form and after solidifying always melts at 143°. Odorless and tasteless. Neutral reaction. Almost insol in cold water. Moderately sol in hot water with gradual decompn forming 3-amino-4-hydroxybenzoic acid and methanol. One gram dissolves in 6 ml alcohol, 50 ml ether; readily dissolves in aq NaOH. Forms water sol salts with HCl and HBr.
Melting point: mp 143°; mp 111°
NOTE: The name Orthoform was applied originally to the methyl ester of 4-amino-3-hydroxybenzoic acid which was also used as a local anesthetic. This compd now is designated as Orthoform Old.
Therap-Cat: Anesthetic (topical).
Therap-Cat-Vet: Anesthetic (topical).
Keywords: Anesthetic (Local).