2-Pentene, 4-methyl-, (Z)-

• Formula: C₆H₁₂
• Molecular weight: 84.1595
• IUPAC Standard InChI: InChI=1S/C6H12/c1-4-5-6(2)3/h4-6H,1-3H3/b5-4- Copy

  
• IUPAC Standard InChIKey: LGAQJENWWYGFSN-PLNGDYQASA-N Copy
• CAS Registry Number: 691-38-3
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  View 3d structure (requires JavaScript / HTML 5)
• Stereoisomers:
  • 2-Pentene, 4-methyl-
  • 2-Pentene, 4-methyl-, (E)-
• Other names: (Z)-4-Methyl-2-pentene; cis-4-Methyl-2-Pentene; 4-Methyl-2-cis-pentene; (Z)-(CH3)2CHCH=CHCH3; 4-Methyl-cis-2-pentene; 2-Pentene, 4-methyl-cis-; 4-Methyl-2-pentene, cis; 4-Methylpentene-2, cis-; 4-Methyl-2-pentene; cis-4-methylpent-2-ene
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Normal alkane RI, non-polar column, custom temperature program
  • References
  • Notes
• Other data available:
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
• Options:
  • Switch to calorie-based units

Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Normal alkane RI, non-polar column, custom temperature program

Go To: Top, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

References

Go To: Top, Normal alkane RI, non-polar column, custom temperature program, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Junkes, Castanho, et al., 2003
Junkes, B.S.; Castanho, R.D.M.; Amboni, C.; Yunes, R.A.; Heinzen, V.E.F., Semiempirical Topological Index: A Novel Molecular Descriptor for Quantitative Structure-Retention Relationship Studies, Internet Electronic Journal of Molecular Design, 2003, 2, 1, 33-49. [all data]

Zhu and He, 1999
Zhu, X.; He, L., Derivation of isothermal retention indices from a retention values under multiple-ramp temperature-programmed conditions, J. Instrum. Anal. (Chinese), 1999, 18, 6, 10-12. [all data]

Robinson and Odell, 1971
Robinson, P.G.; Odell, A.L., A system of standard retention indices and its uses. The characterisation of stationary phases and the prediction of retention indices, J. Chromatogr., 1971, 57, 1-10, https://doi.org/10.1016/0021-9673(71)80001-8 . [all data]

Notes

Go To: Top, Normal alkane RI, non-polar column, custom temperature program, References

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.

© 2026 by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Copyright for NIST Standard Reference Data is governed by the Standard Reference Data Act.