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2,3-Dimethylmaleic anhydride, 97% - CAS 766-39-2 - Formula C6H6O3

L12919 766-39-2 2,3-Dimethylmaleic anhydride, 97% 3,4-Dimethyl-2,5-furandione Alfa Aesar


Certificate of Analysis

2,3-Dimethylmaleic anhydride, 97%

CAS: 766-39-2 MDL: MFCD00005523  EINECS: 212-165-8
Not regulated for shipping
Alternate Name: 3,4-Dimethyl-2,5-furandione


Pricing and Availability

Size ($) Price Your Price Quantity Options Availability
5g 59.70 Check Availability Add to Favorites Enter qty and click checkbox
25g 237.00 Check Availability Add to Favorites Enter qty and click checkbox

Chemical Properties

Formula: C6H6O3  Boiling point: 222-223°
Formula weight: 126.11  Sensitivity: Moisture Sensitive
Melting point: 93-96° 

Literature References

Does not undergo Diels-Alder reactions with furan, but does react with 1,3-Diphenyl­isobenzofuran, L00101, to give benzocantharadin: J. Org. Chem., 47, 4011 (1982).

The use of the dimethylmaleoyl (DMM) group has been investigated for amino group protection in oligosaccharide synthesis. The DMM group is introduced using triethylamine as base. It promotes ß -linkage by neighboring group participation and is stable to acids and non-nucleophilic bases. Cleavage can be brought about by treatment with dilute aqueous NaOH: Eur. J. Org. Chem., 2305 (1998).

Other References

Beilstein: 112044
Harmonized Tariff Code: 2917.19

GHS Hazard and Precautionary Statements

Hazard Statements : H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements : P261-P280-P305+P351+P338-P304+P340-P405-P501A

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Harmful or Irritant

Risk & Safety

Risk Phrases: 36/37/38
Irritating to eyes, respiratory system and skin.
Safety Phrases: 26-37
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable gloves.
RTECS: ON4025000