Methyl Anthranilate CAS 134-20-3, Methyl Anthranilate, CAS 134-20-3
Methyl o-aminobenzoic acid (CAS 134-20-3), as a key intermediate in multiple industries, has the core value of:Flavor irreplaceability: The main body of grape essence, with an annual global demand of over 5,000 tons.
134-20-3
C8H9NO2
151.16
205-132-4
| CAS | 134-20-3 |
| Molecular formula | C8H9NO2 |
| Molecular weight | 151.16 |
| EIENCS | 205-132-4 |
| Form | Liquid |
| Melting point | 24 °C |
| boling point | 256 °C |
| Density | 1.168 g/mL at 25 °C |
| Solubility | alcohol: freely soluble(lit.) |
| PKA | pK1:2.23(＋1) (25°C) |
| Color | Clear yellow-brown |
| Storage temp | Keep in dark place,Inert atmosphere,Room temperature |
Molecular formula and structure
Molecular formula: C₈H₉NO₂
Molecular weight: 151.16 g/mol
Structure: It contains a benzene ring, an amino group (-NH ₂), and a methyl ester group (-COOCH ₃), and belongs to ortho-substituted arylamine ester compounds.
Appearance: Colorless to pale yellow liquid with blue fluorescence and a grape-like fruity aroma. It turns yellow after long-term exposure to light and should be stored away from light.
Methyl o-aminobenzoic acid (CAS 134-20-3), as a key intermediate in multiple industries, has the core value of:
Flavor irreplaceability: The main body of grape essence, with an annual global demand of over 5,000 tons.
Green process breakthrough: Low-temperature crystallization technology achieves near-zero discharge of wastewater (recovery rate of sodium carbonate decahydrate >95%);
Pharmaceutical extension potential: Demand for anti-tumor drug intermediates increases by 12% annually.
1. Food flavorings (dominant application)
Flavor blending：
Grape essence: Main component (accounting for 60-80% of the essence formula), used in beverages and candies.
Other fruit scents: modifiers for citrus, strawberry and watermelon essences.
Usage limit (FEMA 2682) :
| Food category | Maximum dosage (mg/kg) |
|---|---|
| Chewing gum | 2200 |
| candy | 161 |
| Soft drink | 16 |
| Alcoholic beverages | 0.2 |
Fixatives: They condense with aldehydes to form Schiff bases (such as Aurantiol), enhancing the persistence of the aroma.
Sunscreen agent: Menthol o-aminobenzoate is obtained through transesterification and is used in sunscreen (UV absorption band 290-320nm).
Pharmaceutical synthesis: Preparation of the intermediate for the anti-tumor drug paclitaxel and the anti-arrhythmic drug Changliroline.
Pesticide raw materials: synthetic herbicides (glyphosate), insecticides. Global demand for pesticides is increasing by 5% annually.
Toxicity data
Acute oral LD₅₀ : 2910 mg/kg in rats, 3900 mg/kg in mice (low toxicity).
Irritation: Moderate irritation caused by eye/skin contact (rabbit experiment). Goggles and gloves must be worn during operation.
Environmental risk
Flammable (flash point 104℃), burning releases toxic nitrogen oxides.
The wastewater contains salt and needs to be treated (clean processes can reduce the salt content to below 3%).
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