Name: tiglic acid; (E)-2-methylbut-2-enoic acid*; cevadic acid
* IUPAC
CAS Number: 80-59-1
Chemical Formula: C₅H₈O₂
Molar Mass: 100.11582 g
Mass Percent: C 59.984 %; H 8.0541 %; O 31.961 % 
Isomers:  vinyl propionate  •  glutaraldehyde  •  acetylacetone  •  ethyl acrylate  •  angelic acid  •  allyl acetate  •  2,3-pentanedione

• organic • alkene • carboxylic acid

Double Bonds: 2
Triple Bonds: 0
Sigma Bonds: 14
Pi Bonds: 2
Total: 16
Carboxyl Groups: 1
Hydroxyl Groups: 0
Hybridization: double bonded carbons are oxygen are sp2; other carbons and oxygen are sp3

The heat of combustion is the amount of heat released when one mole of a substance undergoes combustion according to the general reaction equation:
CxHyOz + 0.25(4x+y-2z) O2 (g) → x CO2 (g) + 0.5y H2O (ℓ)

ΔHcomb° (s): -626.21 kcal = -2620.0868 kJ

Wikipedia

(1) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:91.
(2) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:91.
(3) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:91.