trans-2-Methyl-2-butenal, 97%

trans-2-Methyl-2-butenal, 97%,

trans-2-Methyl-2-butenal, also known as tiglic aldehyde, is utilized as a starting reagent in the synthesis of alkyl-branched tetraene hydrocarbons and as a pheromone component for dried fruit beetles. It has been employed in the concise total synthesis of 7-demethylpiericidin A11. 

Product Details:

• Product Code: 11387985

• Brand: Thermo Scientific™

• Purity: ≥97% (GC)

• CAS Number: 497-03-0

• Molecular Formula: C₅H₈O

• Molecular Weight: 84.12 g/mol

• Appearance: Clear, colorless to yellow liquid

• Boiling Point: 117–119 °C

• Density: 0.871 g/mL

• Refractive Index: 1.4455–1.4505 at 20 °C

• Solubility: Soluble in water

• Sensitivity: Air sensitive

• Storage: Keep container tightly closed. Store in cool, dry conditions in well-sealed containers

Key Features:

• High-purity reagent suitable for specialized organic synthesis applications

• Consistent quality ensures reliable performance in research settings

• Originally part of the Alfa Aesar product portfolio, now under Thermo Scientific Chemicals

Safety & Handling:

• Hazard Statements:

  • H225 – Highly flammable liquid and vapor

  • H315 – Causes skin irritation

  • H319 – Causes serious eye irritation

  • H335 – May cause respiratory irritation

• Precautionary Statements:

  • P210 – Keep away from heat/sparks/open flames/hot surfaces. No smoking

  • P233 – Keep container tightly closed

  • P240 – Ground/bond container and receiving equipment

  • P241 – Use explosion-proof electrical/ventilating/lighting equipment

  • P242 – Use only non-sparking tools

  • P243 – Take precautionary measures against static discharge

  • P261 – Avoid breathing dust/fume/gas/mist/vapors/spray

  • P264 – Wash hands thoroughly after handling

  • P271 – Use only outdoors or in a well-ventilated area

  • P280 – Wear protective gloves/protective clothing/eye protection/face protection

  • P303+P361+P353 – IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower

  • P304+P340 – IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing

  • P305+P351+P338 – IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing

  • P312 – Call a POISON CENTER or doctor/physician if you feel unwell

  • P332+P313 – If skin irritation occurs: Get medical advice/attention

  • P363 – Wash contaminated clothing before reuse

  • P370+P378 – In case of fire: Use appropriate media to extinguish

  • P501 – Dispose of contents/container in accordance with local/regional/national/international regulations