| Chromatographic Method | Retention Time | Reference |
|---|
| Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022. | 1.86 minutes | 32390414 |
| Predicted by Siyang on May 30, 2022 | 10.3723 minutes | 33406817 |
| Predicted by Siyang using ReTip algorithm on June 8, 2022 | 7.83 minutes | 32390414 |
| AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 298.6 seconds | 40023050 |
| Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 866.8 seconds | 40023050 |
| Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 227.3 seconds | 40023050 |
| Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 72.4 seconds | 40023050 |
| Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 156.5 seconds | 40023050 |
| RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 52.1 seconds | 40023050 |
| Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 298.5 seconds | 40023050 |
| BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 278.4 seconds | 40023050 |
| HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 542.0 seconds | 40023050 |
| UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 629.0 seconds | 40023050 |
| BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 200.8 seconds | 40023050 |
| UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 869.2 seconds | 40023050 |
| SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 166.9 seconds | 40023050 |
| RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 202.1 seconds | 40023050 |
| MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 407.0 seconds | 40023050 |
| KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 438.8 seconds | 40023050 |
| Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 198.6 seconds | 40023050 |
| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
|---|
| Leucyl-Threonine,1TMS,isomer #1 | CC(C)CC(N)C(=O)NC(C(=O)O)C(C)O[Si](C)(C)C | 1880.2 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,1TMS,isomer #2 | CC(C)CC(N)C(=O)NC(C(=O)O[Si](C)(C)C)C(C)O | 1874.3 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,1TMS,isomer #3 | CC(C)CC(N[Si](C)(C)C)C(=O)NC(C(=O)O)C(C)O | 1914.0 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,1TMS,isomer #4 | CC(C)CC(N)C(=O)N(C(C(=O)O)C(C)O)[Si](C)(C)C | 1879.3 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TMS,isomer #1 | CC(C)CC(N)C(=O)NC(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C | 1896.7 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TMS,isomer #2 | CC(C)CC(N[Si](C)(C)C)C(=O)NC(C(=O)O)C(C)O[Si](C)(C)C | 1951.2 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TMS,isomer #3 | CC(C)CC(N)C(=O)N(C(C(=O)O)C(C)O[Si](C)(C)C)[Si](C)(C)C | 1931.5 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TMS,isomer #4 | CC(C)CC(N[Si](C)(C)C)C(=O)NC(C(=O)O[Si](C)(C)C)C(C)O | 1940.3 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TMS,isomer #5 | CC(C)CC(N)C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O)[Si](C)(C)C | 1885.5 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TMS,isomer #6 | CC(C)CC(C(=O)NC(C(=O)O)C(C)O)N([Si](C)(C)C)[Si](C)(C)C | 2098.5 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TMS,isomer #7 | CC(C)CC(N[Si](C)(C)C)C(=O)N(C(C(=O)O)C(C)O)[Si](C)(C)C | 1968.7 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #1 | CC(C)CC(N[Si](C)(C)C)C(=O)NC(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C | 1953.7 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #1 | CC(C)CC(N[Si](C)(C)C)C(=O)NC(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C | 1989.7 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #2 | CC(C)CC(N)C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C)[Si](C)(C)C | 1935.2 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #2 | CC(C)CC(N)C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C)[Si](C)(C)C | 2015.6 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #3 | CC(C)CC(C(=O)NC(C(=O)O)C(C)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2117.9 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #3 | CC(C)CC(C(=O)NC(C(=O)O)C(C)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2044.7 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #4 | CC(C)CC(N[Si](C)(C)C)C(=O)N(C(C(=O)O)C(C)O[Si](C)(C)C)[Si](C)(C)C | 2008.4 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #4 | CC(C)CC(N[Si](C)(C)C)C(=O)N(C(C(=O)O)C(C)O[Si](C)(C)C)[Si](C)(C)C | 2016.2 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #5 | CC(C)CC(C(=O)NC(C(=O)O[Si](C)(C)C)C(C)O)N([Si](C)(C)C)[Si](C)(C)C | 2094.5 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #5 | CC(C)CC(C(=O)NC(C(=O)O[Si](C)(C)C)C(C)O)N([Si](C)(C)C)[Si](C)(C)C | 2030.6 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #6 | CC(C)CC(N[Si](C)(C)C)C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O)[Si](C)(C)C | 1952.0 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #6 | CC(C)CC(N[Si](C)(C)C)C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O)[Si](C)(C)C | 2008.5 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #7 | CC(C)CC(C(=O)N(C(C(=O)O)C(C)O)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2107.8 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TMS,isomer #7 | CC(C)CC(C(=O)N(C(C(=O)O)C(C)O)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2066.5 | Standard non polar | 33892256 |
| Leucyl-Threonine,4TMS,isomer #1 | CC(C)CC(C(=O)NC(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2100.1 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,4TMS,isomer #1 | CC(C)CC(C(=O)NC(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2136.8 | Standard non polar | 33892256 |
| Leucyl-Threonine,4TMS,isomer #2 | CC(C)CC(N[Si](C)(C)C)C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C)[Si](C)(C)C | 1997.3 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,4TMS,isomer #2 | CC(C)CC(N[Si](C)(C)C)C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C)[Si](C)(C)C | 2096.8 | Standard non polar | 33892256 |
| Leucyl-Threonine,4TMS,isomer #3 | CC(C)CC(C(=O)N(C(C(=O)O)C(C)O[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2158.5 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,4TMS,isomer #3 | CC(C)CC(C(=O)N(C(C(=O)O)C(C)O[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2148.5 | Standard non polar | 33892256 |
| Leucyl-Threonine,4TMS,isomer #4 | CC(C)CC(C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2116.9 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,4TMS,isomer #4 | CC(C)CC(C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2148.8 | Standard non polar | 33892256 |
| Leucyl-Threonine,5TMS,isomer #1 | CC(C)CC(C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2184.5 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,5TMS,isomer #1 | CC(C)CC(C(=O)N(C(C(=O)O[Si](C)(C)C)C(C)O[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2243.5 | Standard non polar | 33892256 |
| Leucyl-Threonine,1TBDMS,isomer #1 | CC(C)CC(N)C(=O)NC(C(=O)O)C(C)O[Si](C)(C)C(C)(C)C | 2112.9 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,1TBDMS,isomer #2 | CC(C)CC(N)C(=O)NC(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O | 2116.5 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,1TBDMS,isomer #3 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)NC(C(=O)O)C(C)O | 2154.1 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,1TBDMS,isomer #4 | CC(C)CC(N)C(=O)N(C(C(=O)O)C(C)O)[Si](C)(C)C(C)(C)C | 2099.6 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TBDMS,isomer #1 | CC(C)CC(N)C(=O)NC(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C | 2344.0 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TBDMS,isomer #2 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)NC(C(=O)O)C(C)O[Si](C)(C)C(C)(C)C | 2393.7 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TBDMS,isomer #3 | CC(C)CC(N)C(=O)N(C(C(=O)O)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2375.9 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TBDMS,isomer #4 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)NC(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O | 2393.2 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TBDMS,isomer #5 | CC(C)CC(N)C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O)[Si](C)(C)C(C)(C)C | 2336.7 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TBDMS,isomer #6 | CC(C)CC(C(=O)NC(C(=O)O)C(C)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2518.8 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,2TBDMS,isomer #7 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(C(=O)O)C(C)O)[Si](C)(C)C(C)(C)C | 2409.0 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #1 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)NC(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C | 2598.0 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #1 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)NC(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C | 2542.6 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #2 | CC(C)CC(N)C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2580.5 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #2 | CC(C)CC(N)C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2555.4 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #3 | CC(C)CC(C(=O)NC(C(=O)O)C(C)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2786.2 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #3 | CC(C)CC(C(=O)NC(C(=O)O)C(C)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2587.1 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #4 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(C(=O)O)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2649.4 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #4 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(C(=O)O)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2551.7 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #5 | CC(C)CC(C(=O)NC(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2749.3 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #5 | CC(C)CC(C(=O)NC(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2578.9 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #6 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O)[Si](C)(C)C(C)(C)C | 2606.9 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #6 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O)[Si](C)(C)C(C)(C)C | 2558.7 | Standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #7 | CC(C)CC(C(=O)N(C(C(=O)O)C(C)O)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2756.1 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,3TBDMS,isomer #7 | CC(C)CC(C(=O)N(C(C(=O)O)C(C)O)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2595.0 | Standard non polar | 33892256 |
| Leucyl-Threonine,4TBDMS,isomer #1 | CC(C)CC(C(=O)NC(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2983.6 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,4TBDMS,isomer #1 | CC(C)CC(C(=O)NC(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2827.6 | Standard non polar | 33892256 |
| Leucyl-Threonine,4TBDMS,isomer #2 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2832.9 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,4TBDMS,isomer #2 | CC(C)CC(N[Si](C)(C)C(C)(C)C)C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2804.4 | Standard non polar | 33892256 |
| Leucyl-Threonine,4TBDMS,isomer #3 | CC(C)CC(C(=O)N(C(C(=O)O)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3028.8 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,4TBDMS,isomer #3 | CC(C)CC(C(=O)N(C(C(=O)O)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2834.0 | Standard non polar | 33892256 |
| Leucyl-Threonine,4TBDMS,isomer #4 | CC(C)CC(C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2977.0 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,4TBDMS,isomer #4 | CC(C)CC(C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2848.1 | Standard non polar | 33892256 |
| Leucyl-Threonine,5TBDMS,isomer #1 | CC(C)CC(C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3256.5 | Semi standard non polar | 33892256 |
| Leucyl-Threonine,5TBDMS,isomer #1 | CC(C)CC(C(=O)N(C(C(=O)O[Si](C)(C)C(C)(C)C)C(C)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3092.9 | Standard non polar | 33892256 |