Isatoic Anhydride

Isatoic Anhydride

CAS Number
118-48-9
Molecular Formula
C8H5NO3
Purity
99.83%
IrritantIrritant

About Isatoic Anhydride

Isatoic anhydride, chemically designated 2H-3,1-benzoxazine-2,4(1H)-dione (CAS No. 118-48-9) and known across trade channels as isatoic acid anhydride or IA, is a bicyclic N-carboxyanhydride universally valued as an electrophilic building block in heterocyclic chemistry, with a fused benzene ring and reactive anhydride...

Synonyms

  • Benzoxazinedione
  • C8H5NO3
  • ACMC-1BVLV
  • AC1L1QTW
  • TXJUTRJFNRYTHH-UHFFFAOYSA-N
View all

Isatoic Anhydride Specifications

CAS Number
118-48-9
Molecular Formula
C8H5NO3
Molecular Weight
163.13 g/mol
IUPAC NameORBotanical Name
1H-3,1-benzoxazine-2,4-dione
Canonical SMILES
C1=CC=C2C(=C1)C(=O)OC(=O)N2
InChI Key
TXJUTRJFNRYTHH-UHFFFAOYSA-N
InChI
InChI=1S/C8H5NO3/c10-7-5-3-1-2-4-6(5)9-8(11)12-7/h1-4H,(H,9,11)
UNII Code
R8TFA74Y4U
DSSTox Substance ID
DTXSID6026955
EINECS Number
204-255-0
MDL Number
MFCD00006700
Molecular Weight
163.13 g/mol
XLogP3
1
Hydrogen Bond Acceptor Count
3
Monoisotopic Mass
163.026943022 Da
Melting Point
243°C with decomposition (469 °F; 516 K)
Appearance
white solid
Density (Predicted)
1.402±0.06 g/cm3 Temp: 25°C; Press: 760 Torr
pKa (Predicted)
11.056±0.20
pka
Type: Most Acidic; Temp: 25°C
% Purity by GC derivative method (NLT 99 %)
99.83%
GHS Hazard Statements
H317: May cause an allergic skin reaction H319: Causes serious eye irritation
Hazard Classes and Categories
Skin Sens. 1 (94.8%) Eye Irrit. 2A (94.3%)

Agrochemical Active Ingredient Precursor

A primary building block for synthesising sulfonylurea herbicides (such as bentazon), crop protection fungicides, and specialised pest control agents

Pharmaceutical Active Ingredient Building Block

A versatile intermediate used in multi-step chemical syntheses of quinazolinone therapeutics, anti-inflammatory drugs, tranquilisers, and central nervous system agents

Anthranilate Ester & Amide Synthesis

A reactive acylating agent converting cleanly with alcohols or amines into methyl anthranilate, ethyl anthranilate, and anthranilamide derivatives with carbon dioxide release as the sole byproduct

Saccharin & Speciality Dye Intermediate

A foundational starting material utilised in industrial production routes for saccharin sweeteners, azo dyes, and functional fluorescent brightening agents

Speciality Polymer & Epoxy Curing Agent

A functional heterocyclic compound used as a chain extender, polyurethane modifier, and curing additive in advanced polymer resins

COA
Download
  1. Benzoxazinedione
  2. C8H5NO3
  3. ACMC-1BVLV
  4. AC1L1QTW
  5. TXJUTRJFNRYTHH-UHFFFAOYSA-N

Isatoic Anhydride FAQs

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

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