Description

Isobutyric Anhydride CAS NO 97-72-3 is a versatile organic acid anhydride widely used as a key acylating and esterifying agent in chemical synthesis. Its primary value lies in its high reactivity, enabling efficient production of isobutyrate esters, amides, and other derivatives essential for various industrial processes. This compound is particularly important for manufacturers in the pharmaceutical, agrochemical, flavor & fragrance, and polymer industries seeking reliable and high-purity intermediates.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs via acylation reactions.
• Flavor and Fragrance Production: A key precursor for manufacturing isobutyrate esters, which are important aroma compounds (e.g., ethyl isobutyrate) used in food flavorings and perfumes.
• Agrochemical Synthesis: Serves as a building block for producing herbicides, fungicides, and plant growth regulators.
• Polymer and Resin Modifier: Employed in the production of specialty polymers, coatings, and plasticizers to modify properties.
• Organic Synthesis Reagent: Acts as a versatile acylating agent for introducing the isobutyryl group into alcohols, amines, and other nucleophiles in laboratory and industrial settings.
• Perfumery Fixative: Used in the creation of fragrance compounds where its derivatives help stabilize and prolong scent profiles.

Basic Information

Product Name	Isobutyric Anhydride
CAS No.	97-72-3
Molecular Formula	C8H14O3
Molecular Weight	158.20 g/mol
Synonyms	Isobutanoic Anhydride; 2-Methylpropanoic Anhydride; Isobutyryl Anhydride; Diisobutyryl Oxide; Isobutyric Acid Anhydride; Isobutanoic Acid Anhydride; 2-Methylpropionic Anhydride; Isobutyryl Oxide
EINECS	202-603-9

Quality Control

Our Isobutyric Anhydride is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for every shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality commitment aligns with industrial and fine chemical grade standards, and we can support requirements for cGMP manufacturing upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be kept under an inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Free Acid (as Isobutyric Acid)	≤ 1.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.