CAS Registry Number

CAS 2892-62-8 — 3,4-Dibutoxy-3-cyclobutene-1,2-dione

3,4-Dibutoxy-3-cyclobutene-1,2-dione, also known as dibutyl squarate, is a dibutyl ester of squaric acid used in synthetic organic chemistry as a reagent for preparing squaramides and squaraine dyes through substitution of its butoxy groups with amines and other nucleophiles. It is also a contact sensitizer with documented roles as an allergen and immunological adjuvant, for example in topical immunotherapy for alopecia areata and warts. This chemical has a CAS number of 2892-62-8, with a molecular formula of C12H18O4 and a molecular weight of 226.27 g/mol. It is stored at ambient conditions and carries a signal word of "Warning" due to moderate hazard risks. Molekula supplies 3,4-Dibutoxy-3-cyclobutene-1,2-dione from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: 1,2-dibutoxy-1-cyclobutene-3,4-dione · 1,2-dibutyl squarate · 3-Cyclobutene-1,2-dione, 3,4-dibutoxy- · 3,4-di-n-Butoxy-3-cyclobutene-1,2-dione · 3,4-dibutoxycyclobut-3-ene-1,2-dione · Dibutyl squarate · DIBUTYL SQUARATE, REFERENCE STANDARD · Epitope ID:115137 · SADBE · Squaric acid dibutyl ester