Urea, 2TMS derivative
- Formula: C7H20N2OSi2
- Molecular weight: 204.4175
- IUPAC Standard InChI: InChI=1S/C7H20N2OSi2/c1-11(2,3)8-7(10)9-12(4,5)6/h1-6H3,(H2,8,9,10)
- IUPAC Standard InChIKey: MASDFXZJIDNRTR-UHFFFAOYSA-N
- CAS Registry Number: 18297-63-7
- 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) - Other names: Urea, N,N'-bis(trimethylsilyl)-; Urea, 1,3-bis(trimethylsilyl)-; Bis(trimethylsilyl)urea; N,N'-Bis(trimethylsilyl)urea; N1,N2-Bis(trimethylsilyl)urea; 1,3-Bis(trimethylsilyl)urea; Bis(trimethylsilyl) derivative of urea; N,N'-Di(trimethylsilyl)urea; Urea, di-TMS; Urea, bis-TMS; Urea, TMS; Urea, bis-trimethylsilyl
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Van Den Dool and Kratz 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 | DB-5 | HP-5 | OV-1 | SE-52 | Ultra-2 |
| Column length (m) | 30. | 25. | 10. | 25. | 25. |
| Carrier gas | He | He | He | He | He |
| Substrate | |||||
| Column diameter (mm) | 0.25 | 0.31 | 0.22 | 0.32 | 0.31 |
| Phase thickness (μm) | 1. | 0.52 | 0.17 | 0.52 | 0.52 |
| Tstart (C) | 100. | 100. | 70. | 70. | 50. |
| Tend (C) | 290. | 290. | 270. | 270. | 300. |
| Heat rate (K/min) | 4. | 5. | 5. | 5. | 5. |
| Initial hold (min) | 4. | 5. | |||
| Final hold (min) | 10. | 15. | |||
| I | 1237. | 1249. | 1243. | 1249. | 1249. |
| Reference | Kimura, Yamamoto, et al., 1999 | Antoshechkin, Golovkin, et al., 1989 | Lefevere, Verhaeghe, et al., 1989 | Lefevere, Verhaeghe, et al., 1989 | Tuchman, Bowers, et al., 1984 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Packed |
|---|---|
| Active phase | OV-1 |
| Column length (m) | 1.8 |
| Carrier gas | N2 |
| Substrate | 100-120 mesh |
| Column diameter (mm) | |
| Phase thickness (μm) | |
| Tstart (C) | 70. |
| Tend (C) | 290. |
| Heat rate (K/min) | 28. |
| Initial hold (min) | 0.5 |
| Final hold (min) | |
| I | 1225. |
| Reference | Tanaka, Hine, et al., 1980 |
| Comment | MSDC-RI |
References
Go To: Top, Van Den Dool and Kratz 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.
Kimura, Yamamoto, et al., 1999
Kimura, M.; Yamamoto, T.; Yamaguchi, S.,
Automated metabolic profiling and interpretation of GC/MS data for organic acidemia screening: a personal computer-based system,
Tohoku J. Exp. Med., 1999, 188, 4, 317-334, https://doi.org/10.1620/tjem.188.317
. [all data]
Antoshechkin, Golovkin, et al., 1989
Antoshechkin, A.G.; Golovkin, A.B.; Maximova, L.A.; Bakharev, V.A.,
Screening of amniotic fluid metabolites by gas chromatography-mass spectrometry,
J. Chromatogr., 1989, 489, 2, 353-358, https://doi.org/10.1016/S0378-4347(00)82913-8
. [all data]
Lefevere, Verhaeghe, et al., 1989
Lefevere, M.F.; Verhaeghe, B.J.; Declerck, D.H.; Van Bocxlaer, J.F.; De Leenheer, A.P.; De Sagher, R.M.,
Metabolic Profiling of Urinary Organic Acids by Single and Multicolumn Capillary Gas Chromatography,
J. Chromatogr. Sci., 1989, 27, 1, 23-29, https://doi.org/10.1093/chromsci/27.1.23
. [all data]
Tuchman, Bowers, et al., 1984
Tuchman, M.; Bowers, L.D.; Fregien, K.D.; Crippin, P.J.; Krivit, W.,
Capillary Gas Chromatographic Separation of Urinary Organic Acids. Retention Indices of 101 Urinary Acids on a 5% Phenylmethyl Silicone Capillary Column,
J. Chromatogr. Sci., 1984, 22, 5, 198-202, https://doi.org/10.1093/chromsci/22.5.198
. [all data]
Tanaka, Hine, et al., 1980
Tanaka, K.; Hine, D.G.; West-Dull, A.; Lynn, T.B.,
Gas-chromatographic method of analysis for urinary organic acids. I. Retention indices of 155 metabolically important compounds,
Clin. Chem., 1980, 26, 13, 1839-1846. [all data]
Notes
Go To: Top, Van Den Dool and Kratz 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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