The IUPAC name of p-Aminobenzoic acid methyl ester is methyl 4-aminobenzoate. With the CAS registry number 619-45-4 and EINECS 210-598-7, it is also named as Methyl aniline-4-carboxylate. The product's categories are Carboxylicester; Aromatic Esters; C8 to C9; Carbonyl Compounds; Esters; Aromatic Amino Acids; Peptide Synthesis; Unnatural Amino Acid Derivatives. It is white to beige crystals or crystalline powder which is soluble in alcohol and ether, slightly soluble in water. Additionally, this chemical should be sealed in the container and stored in the cool and dry place.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 1.41; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.41; (4)ACD/LogD (pH 7.4): 1.41; (5)ACD/BCF (pH 5.5): 6.99; (6)ACD/BCF (pH 7.4): 6.99; (7)ACD/KOC (pH 5.5): 139.88; (8)ACD/KOC (pH 7.4): 140.01; (9)#H bond acceptors: 3; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 29.54 Å²; (13)Index of Refraction: 1.565; (14)Molar Refractivity: 42.26 cm³; (15)Molar Volume: 129.6 cm³; (16)Surface Tension: 46.2 dyne/cm; (17)Enthalpy of Vaporization: 53.92 kJ/mol; (18)Vapour Pressure: 0.00121 mmHg at 25°C; (19)Rotatable Bond Count: 2; (20)Tautomer Count: 3; (21)Exact Mass: 151.063329; (22)MonoIsotopic Mass: 151.063329; (23)Topological Polar Surface Area: 52.3; (24)Heavy Atom Count: 11; (25)Complexity: 139.

Preparation of p-Aminobenzoic acid methyl ester: It can be obtained by 4-amino-benzoic acid and methanol. This reaction which is a kind of Esterification needs reagent SOCl₂ by heating. The reaction time is 2 hours. The yield is 100%.

Uses of p-Aminobenzoic acid methyl ester: It is used in organic synthesis and as dye intermediate. It also can react with 2-acetylamino-benzoic acid to get 4-(2-methyl-4-oxo-4H-quinazolin-3-yl)-benzoic acid methyl ester. This reaction needs reagent PCl₃ and solvent toluene by heating. The reaction time is 1.5 hours. The yield is 63%.

When you are using this chemical, please be cautious about it as the following:
It is not only harmful by inhalation, in contact with skin and if swallowed, but also irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection.

People can use the following data to convert to the molecule structure. 
1. SMILES:O=C(OC)c1ccc(N)cc1
2. InChI:InChI=1/C8H9NO2/c1-11-8(10)6-2-4-7(9)5-3-6/h2-5H,9H2,1H3 
3. InChIKey:LZXXNPOYQCLXRS-UHFFFAOYAA

The following are the toxicity data which has been tested.