Pharmaceutical Materials

CAS Number: 5856-77-9

Molecular Formula: C6H11ClO

Molecular Weight: 134.60 g/mol

Appearance: Transparent to pale yellow liquid

Boiling Point: 133°C

Flash Point: 29°C

Usage: Used as a chemical intermediate.

 

Aspect	Details
Name	2.2-Dimethylbutyryl Chloride
Common Synonyms	Neopentanoyl Chloride, Pivaloyl Chloride (alternate naming in some contexts), 2.2-Dimethylbutanoyl Chloride
CAS No.	3282-30-2
Molecular Formula	C₆H₁₁ClO
Molecular Weight	134.60 g/mol
Physical Properties	Appearance: Colorless to pale yellow liquid Boiling Point: 142-144 °C (at 760 mmHg) Density: 0.988 g/cm³ (approximate) Solubility: Reacts with water; soluble in organic solvents like chloroform, ether
Chemical Properties	Highly reactive acyl chloride derivative Sensitive to moisture; hydrolyzes rapidly in water Participates in Friedel-Crafts acylation and amide/ester formation reactions
Applications	Used as a reagent in pharmaceutical synthesis (e.g., preparation of amide drugs) Employed in agrochemical production for pesticide intermediates Utilized in specialty chemical synthesis for fragrances and polymers
Safety Information	Corrosive (C); irritant (Xi) Wear PPE (gloves, goggles) to avoid skin/eye contact Store in a dry, well-ventilated area, away from alcohols and amines

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