| 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. | 1.59 minutes | 32390414 |
| Predicted by Siyang on May 30, 2022 | 10.4275 minutes | 33406817 |
| Predicted by Siyang using ReTip algorithm on June 8, 2022 | 8.11 minutes | 32390414 |
| AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 340.6 seconds | 40023050 |
| Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 719.9 seconds | 40023050 |
| Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 251.2 seconds | 40023050 |
| Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 63.6 seconds | 40023050 |
| Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 163.4 seconds | 40023050 |
| RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 58.4 seconds | 40023050 |
| Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 312.2 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 | 271.5 seconds | 40023050 |
| HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 694.8 seconds | 40023050 |
| UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 638.7 seconds | 40023050 |
| BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 138.3 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 | 881.7 seconds | 40023050 |
| SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 167.0 seconds | 40023050 |
| RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 198.1 seconds | 40023050 |
| MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 469.3 seconds | 40023050 |
| KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 428.5 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 | 257.5 seconds | 40023050 |
| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
|---|
| Isoleucyl-Serine,1TMS,isomer #1 | CCC(C)C(N)C(=O)NC(CO[Si](C)(C)C)C(=O)O | 1888.1 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,1TMS,isomer #2 | CCC(C)C(N)C(=O)NC(CO)C(=O)O[Si](C)(C)C | 1887.7 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,1TMS,isomer #3 | CCC(C)C(N[Si](C)(C)C)C(=O)NC(CO)C(=O)O | 1934.1 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,1TMS,isomer #4 | CCC(C)C(N)C(=O)N(C(CO)C(=O)O)[Si](C)(C)C | 1895.3 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TMS,isomer #1 | CCC(C)C(N)C(=O)NC(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1894.2 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TMS,isomer #2 | CCC(C)C(N[Si](C)(C)C)C(=O)NC(CO[Si](C)(C)C)C(=O)O | 1949.9 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TMS,isomer #3 | CCC(C)C(N)C(=O)N(C(CO[Si](C)(C)C)C(=O)O)[Si](C)(C)C | 1939.8 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TMS,isomer #4 | CCC(C)C(N[Si](C)(C)C)C(=O)NC(CO)C(=O)O[Si](C)(C)C | 1949.9 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TMS,isomer #5 | CCC(C)C(N)C(=O)N(C(CO)C(=O)O[Si](C)(C)C)[Si](C)(C)C | 1888.1 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TMS,isomer #6 | CCC(C)C(C(=O)NC(CO)C(=O)O)N([Si](C)(C)C)[Si](C)(C)C | 2087.8 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TMS,isomer #7 | CCC(C)C(N[Si](C)(C)C)C(=O)N(C(CO)C(=O)O)[Si](C)(C)C | 1965.9 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #1 | CCC(C)C(N[Si](C)(C)C)C(=O)NC(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1966.3 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #1 | CCC(C)C(N[Si](C)(C)C)C(=O)NC(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1965.1 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #2 | CCC(C)C(N)C(=O)N(C(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C | 1928.5 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #2 | CCC(C)C(N)C(=O)N(C(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C | 1998.6 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #3 | CCC(C)C(C(=O)NC(CO[Si](C)(C)C)C(=O)O)N([Si](C)(C)C)[Si](C)(C)C | 2132.0 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #3 | CCC(C)C(C(=O)NC(CO[Si](C)(C)C)C(=O)O)N([Si](C)(C)C)[Si](C)(C)C | 2017.1 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #4 | CCC(C)C(N[Si](C)(C)C)C(=O)N(C(CO[Si](C)(C)C)C(=O)O)[Si](C)(C)C | 2005.2 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #4 | CCC(C)C(N[Si](C)(C)C)C(=O)N(C(CO[Si](C)(C)C)C(=O)O)[Si](C)(C)C | 2002.4 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #5 | CCC(C)C(C(=O)NC(CO)C(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2106.1 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #5 | CCC(C)C(C(=O)NC(CO)C(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 1992.8 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #6 | CCC(C)C(N[Si](C)(C)C)C(=O)N(C(CO)C(=O)O[Si](C)(C)C)[Si](C)(C)C | 1962.2 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #6 | CCC(C)C(N[Si](C)(C)C)C(=O)N(C(CO)C(=O)O[Si](C)(C)C)[Si](C)(C)C | 1973.3 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #7 | CCC(C)C(C(=O)N(C(CO)C(=O)O)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2102.9 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TMS,isomer #7 | CCC(C)C(C(=O)N(C(CO)C(=O)O)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2047.7 | Standard non polar | 33892256 |
| Isoleucyl-Serine,4TMS,isomer #1 | CCC(C)C(C(=O)NC(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2126.4 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,4TMS,isomer #1 | CCC(C)C(C(=O)NC(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2089.0 | Standard non polar | 33892256 |
| Isoleucyl-Serine,4TMS,isomer #2 | CCC(C)C(N[Si](C)(C)C)C(=O)N(C(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C | 1980.4 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,4TMS,isomer #2 | CCC(C)C(N[Si](C)(C)C)C(=O)N(C(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C | 2043.5 | Standard non polar | 33892256 |
| Isoleucyl-Serine,4TMS,isomer #3 | CCC(C)C(C(=O)N(C(CO[Si](C)(C)C)C(=O)O)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2169.2 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,4TMS,isomer #3 | CCC(C)C(C(=O)N(C(CO[Si](C)(C)C)C(=O)O)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2121.8 | Standard non polar | 33892256 |
| Isoleucyl-Serine,4TMS,isomer #4 | CCC(C)C(C(=O)N(C(CO)C(=O)O[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2118.0 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,4TMS,isomer #4 | CCC(C)C(C(=O)N(C(CO)C(=O)O[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2108.6 | Standard non polar | 33892256 |
| Isoleucyl-Serine,5TMS,isomer #1 | CCC(C)C(C(=O)N(C(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2186.5 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,5TMS,isomer #1 | CCC(C)C(C(=O)N(C(CO[Si](C)(C)C)C(=O)O[Si](C)(C)C)[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 2181.0 | Standard non polar | 33892256 |
| Isoleucyl-Serine,1TBDMS,isomer #1 | CCC(C)C(N)C(=O)NC(CO[Si](C)(C)C(C)(C)C)C(=O)O | 2137.2 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,1TBDMS,isomer #2 | CCC(C)C(N)C(=O)NC(CO)C(=O)O[Si](C)(C)C(C)(C)C | 2146.7 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,1TBDMS,isomer #3 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)NC(CO)C(=O)O | 2186.8 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,1TBDMS,isomer #4 | CCC(C)C(N)C(=O)N(C(CO)C(=O)O)[Si](C)(C)C(C)(C)C | 2135.7 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TBDMS,isomer #1 | CCC(C)C(N)C(=O)NC(CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2353.4 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TBDMS,isomer #2 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)NC(CO[Si](C)(C)C(C)(C)C)C(=O)O | 2408.1 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TBDMS,isomer #3 | CCC(C)C(N)C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)O)[Si](C)(C)C(C)(C)C | 2385.1 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TBDMS,isomer #4 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)NC(CO)C(=O)O[Si](C)(C)C(C)(C)C | 2413.0 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TBDMS,isomer #5 | CCC(C)C(N)C(=O)N(C(CO)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2344.2 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TBDMS,isomer #6 | CCC(C)C(C(=O)NC(CO)C(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2548.5 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,2TBDMS,isomer #7 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CO)C(=O)O)[Si](C)(C)C(C)(C)C | 2436.4 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #1 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)NC(CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2611.0 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #1 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)NC(CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2523.4 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #2 | CCC(C)C(N)C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2588.1 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #2 | CCC(C)C(N)C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2574.7 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #3 | CCC(C)C(C(=O)NC(CO[Si](C)(C)C(C)(C)C)C(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2782.8 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #3 | CCC(C)C(C(=O)NC(CO[Si](C)(C)C(C)(C)C)C(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2550.7 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #4 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)O)[Si](C)(C)C(C)(C)C | 2659.5 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #4 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)O)[Si](C)(C)C(C)(C)C | 2527.7 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #5 | CCC(C)C(C(=O)NC(CO)C(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2764.3 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #5 | CCC(C)C(C(=O)NC(CO)C(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2530.2 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #6 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CO)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2626.7 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #6 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CO)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2527.5 | Standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #7 | CCC(C)C(C(=O)N(C(CO)C(=O)O)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2761.6 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,3TBDMS,isomer #7 | CCC(C)C(C(=O)N(C(CO)C(=O)O)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2565.2 | Standard non polar | 33892256 |
| Isoleucyl-Serine,4TBDMS,isomer #1 | CCC(C)C(C(=O)NC(CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2978.6 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,4TBDMS,isomer #1 | CCC(C)C(C(=O)NC(CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2776.4 | Standard non polar | 33892256 |
| Isoleucyl-Serine,4TBDMS,isomer #2 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2832.5 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,4TBDMS,isomer #2 | CCC(C)C(N[Si](C)(C)C(C)(C)C)C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2761.9 | Standard non polar | 33892256 |
| Isoleucyl-Serine,4TBDMS,isomer #3 | CCC(C)C(C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)O)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 3007.5 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,4TBDMS,isomer #3 | CCC(C)C(C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)O)[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2794.5 | Standard non polar | 33892256 |
| Isoleucyl-Serine,4TBDMS,isomer #4 | CCC(C)C(C(=O)N(C(CO)C(=O)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 | 2982.9 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,4TBDMS,isomer #4 | CCC(C)C(C(=O)N(C(CO)C(=O)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 | 2805.7 | Standard non polar | 33892256 |
| Isoleucyl-Serine,5TBDMS,isomer #1 | CCC(C)C(C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)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 | 3256.2 | Semi standard non polar | 33892256 |
| Isoleucyl-Serine,5TBDMS,isomer #1 | CCC(C)C(C(=O)N(C(CO[Si](C)(C)C(C)(C)C)C(=O)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 | 3045.7 | Standard non polar | 33892256 |