3-Methylheptacosane
- Formula: C28H58
- Molecular weight: 394.7601
- IUPAC Standard InChI: InChI=1S/C28H58/c1-4-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23-24-25-26-27-28(3)5-2/h28H,4-27H2,1-3H3
- IUPAC Standard InChIKey: NTRHFQVDDLHZMZ-UHFFFAOYSA-N
- CAS Registry Number: 14167-66-9
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Heptacosane, 3-methyl-; 3-Methyl-n-heptacosane
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- Other data available:
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Normal alkane RI, non-polar column, temperature ramp
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
| Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | OV-1 | Ultra-1 | DB-5 | DB-1 | OV-1 |
| Column length (m) | 100. | 12.5 | 30. | 30. | 40. |
| Carrier gas | Helium | He | He | Ar | |
| Substrate | |||||
| Column diameter (mm) | 0.32 | 0.2 | 0.32 | 0.32 | |
| Phase thickness (μm) | 0.25 | 0.25 | |||
| Tstart (C) | 30. | 150. | 200. | 60. | 200. |
| Tend (C) | 310. | 320. | 280. | 320. | 310. |
| Heat rate (K/min) | 5. | 4. | 3. | 2. | |
| Initial hold (min) | |||||
| Final hold (min) | 5. | ||||
| I | 2776.1 | 2770. | 2775. | 2774. | 2775. |
| Reference | Krkosova, Kubinec, et al., 2007 | Nelson and Charlet, 2003 | Juárez, Blomquist, et al., 2001 | Katritzky, Chen, et al., 2000 | Szafranek, Malinski, et al., 1994 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | OV-1 | BP-1 | BP-1 | BP-1 | BP-1 |
| Column length (m) | 40. | 12. | 12. | 25. | 25. |
| Carrier gas | Helium | Helium | Helium | Helium | |
| Substrate | |||||
| Column diameter (mm) | 0.25 | 0.22 | 0.22 | 0.25 | 0.25 |
| Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | |
| Tstart (C) | 140. | 100. | 100. | 160. | 160. |
| Tend (C) | 300. | 300. | 300. | 300. | 300. |
| Heat rate (K/min) | 2. | 2. | 2. | 1.5 | 1.5 |
| Initial hold (min) | |||||
| Final hold (min) | |||||
| I | 2775. | 2772. | 2773. | 2774. | 2779. |
| Reference | Hebanowska, Malinski, et al., 1990 | Lockey and Oraha, 1990 | Lockey and Oraha, 1990 | Lockey and Dularay, 1986 | Lockey and Dularay, 1986 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary | Capillary | Packed |
|---|---|---|---|---|---|
| Active phase | Dexsil 300 | Dexsil 300 | Dexsil 300 | Dexsil 300 | Dexsil 300 |
| Column length (m) | 15. | 15. | 15. | 15. | 2. |
| Carrier gas | Nitrogen | ||||
| Substrate | Chromosorb W (80-100 mesh) | ||||
| Column diameter (mm) | |||||
| Phase thickness (μm) | |||||
| Tstart (C) | 50. | 50. | 240. | 240. | 80. |
| Tend (C) | 370. | 370. | 330. | 330. | 340. |
| Heat rate (K/min) | 5. | 5. | 2. | 2. | 3.3 |
| Initial hold (min) | |||||
| Final hold (min) | |||||
| I | 2773. | 2775. | 2772. | 2772. | 2773. |
| Reference | Lockey, 1978 | Lockey, 1978 | Lockey, 1978, 2 | Lockey, 1978, 2 | Lockey, 1976 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
References
Go To: Top, Normal alkane RI, non-polar column, temperature ramp, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Krkosova, Kubinec, et al., 2007
Krkosova, Z.; Kubinec, R.; Addova, G.; Jurdakova, H.; Blasko, J.; Ostrovsky, I.; Sojak, L.,
Gas chromatographic - mass spectrometric characterization of monomethylalkanes from fuel diesel,
Petroleum Coal, 2007, 49, 3, 51-62. [all data]
Nelson and Charlet, 2003
Nelson, D.R.; Charlet, L.D.,
Cuticular hydrocarbons of the sunflower beetle,Zygogramma exclamationis,
Comp. Biochem. Physiol. B: Comp. Biochem., 2003, 135, 2, 273-284, https://doi.org/10.1016/S1096-4959(03)00080-0
. [all data]
Juárez, Blomquist, et al., 2001
Juárez, P.; Blomquist, G.J.; Schofield, C.J.,
Hydrocarbons of Rhodnius prolixus, a Chagas disease vector,
Comp. Biochem. Physiol. B: Comp. Biochem., 2001, 129, 4, 733-746, https://doi.org/10.1016/S1096-4959(01)00380-3
. [all data]
Katritzky, Chen, et al., 2000
Katritzky, A.R.; Chen, K.; Maran, U.; Carlson, D.A.,
QSPR Correlation and predictions of GC retention indexes for methyl-branched hydrocarbons produced by insects,
Anal. Chem., 2000, 72, 1, 101-109, https://doi.org/10.1021/ac990800w
. [all data]
Szafranek, Malinski, et al., 1994
Szafranek, J.; Malinski, E.; Dubis, E.; Hebanowska, E.; Nawrot, J.; Oksman, P.; Pihlaja, K.,
Identification of branched alkanes in lipids of Leptinotarsa decemlineata say and Tribolium destructor by GC-MS: a comparison of main-beam and link-scanned spectra,
J. Chem. Ecol., 1994, 20, 9, 2197-2212, https://doi.org/10.1007/BF02033197
. [all data]
Hebanowska, Malinski, et al., 1990
Hebanowska, E.; Malinski, E.; Dubis, E.; Oksman, P.; Pihlaja, K.; Nawrot, J.; Szafranek, J.,
The cuticular hydrocarbons of the larvae of Anagasta kuehniella Z.,
Comp. Biochem. Physiol. B: Comp. Biochem., 1990, 95, 4, 699-703. [all data]
Lockey and Oraha, 1990
Lockey, K.H.; Oraha, V.S.,
Cuticular lipids of adult Locusta Migratoria Migratoriodes (R and F), Schstocerca Gregaria (Forskal) (Acrididae) and other orthopteran species - II. Hydrocarbons,
Comp. Biochem. Physiol., 1990, 95B, 4, 721-744. [all data]
Lockey and Dularay, 1986
Lockey, K.H.; Dularay, B.,
Cuticular methylalkanes of adult cockroaches, Blatta orientalis and Periplaneta Americana,
Comp. Biochem. Physiol., 1986, 85B, 3, 567-572. [all data]
Lockey, 1978
Lockey, K.H.,
The adult cuticular hydrocarbons of Tenebrio Molitor L. and Tenebrio Obscurus F. (Coleoptera: Tenebrionidae),
Insect Biochem., 1978, 8, 4, 237-250, https://doi.org/10.1016/0020-1790(78)90032-X
. [all data]
Lockey, 1978, 2
Lockey, K.H.,
Hydrocarbons of adult Tribolum castaneum Hbst. and Tribolium confusum duv. (Coleoptera: Tenebrionidae),
Comparative Biochem. Physiol., 1978, 61B, 401-407. [all data]
Lockey, 1976
Lockey, K.H.,
Cuticular hydrocarbons of Locusta, Schistocerca, and Periplaneta, and their role in waterproofing,
Insect Biochem., 1976, 6, 5, 457-472, https://doi.org/10.1016/0020-1790(76)90068-8
. [all data]
Notes
Go To: Top, Normal alkane RI, non-polar column, temperature ramp, References
- Symbols used in this document:
Tend Final temperature Tstart Initial temperature - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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