| 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. | 1.69 minutes | 32390414 |
| Predicted by Siyang on May 30, 2022 | 9.1458 minutes | 33406817 |
| Predicted by Siyang using ReTip algorithm on June 8, 2022 | 5.2 minutes | 32390414 |
| AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 380.6 seconds | 40023050 |
| Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 442.4 seconds | 40023050 |
| Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 321.4 seconds | 40023050 |
| Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 39.5 seconds | 40023050 |
| Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 194.5 seconds | 40023050 |
| RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 73.4 seconds | 40023050 |
| Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 286.6 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 | 223.4 seconds | 40023050 |
| HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 804.5 seconds | 40023050 |
| UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 578.6 seconds | 40023050 |
| BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 37.0 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 | 675.7 seconds | 40023050 |
| SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 198.5 seconds | 40023050 |
| RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 287.9 seconds | 40023050 |
| MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 693.8 seconds | 40023050 |
| KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 509.9 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 | 351.6 seconds | 40023050 |
| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
|---|
| Ureidoisobutyric acid,1TMS,isomer #1 | C[C@@H](CNC(N)=O)C(=O)O[Si](C)(C)C | 1584.3 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,1TMS,isomer #2 | C[C@@H](CNC(=O)N[Si](C)(C)C)C(=O)O | 1622.7 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,1TMS,isomer #3 | C[C@@H](CN(C(N)=O)[Si](C)(C)C)C(=O)O | 1596.3 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #1 | C[C@@H](CNC(=O)N[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1673.6 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #1 | C[C@@H](CNC(=O)N[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1477.9 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #1 | C[C@@H](CNC(=O)N[Si](C)(C)C)C(=O)O[Si](C)(C)C | 2225.5 | Standard polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #2 | C[C@@H](CN(C(N)=O)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1570.2 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #2 | C[C@@H](CN(C(N)=O)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1550.0 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #2 | C[C@@H](CN(C(N)=O)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 2370.4 | Standard polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #3 | C[C@@H](CN(C(=O)N[Si](C)(C)C)[Si](C)(C)C)C(=O)O | 1660.4 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #3 | C[C@@H](CN(C(=O)N[Si](C)(C)C)[Si](C)(C)C)C(=O)O | 1612.0 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #3 | C[C@@H](CN(C(=O)N[Si](C)(C)C)[Si](C)(C)C)C(=O)O | 2257.0 | Standard polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #4 | C[C@@H](CNC(=O)N([Si](C)(C)C)[Si](C)(C)C)C(=O)O | 1738.2 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #4 | C[C@@H](CNC(=O)N([Si](C)(C)C)[Si](C)(C)C)C(=O)O | 1558.2 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,2TMS,isomer #4 | C[C@@H](CNC(=O)N([Si](C)(C)C)[Si](C)(C)C)C(=O)O | 2347.8 | Standard polar | 33892256 |
| Ureidoisobutyric acid,3TMS,isomer #1 | C[C@@H](CN(C(=O)N[Si](C)(C)C)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1664.8 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,3TMS,isomer #1 | C[C@@H](CN(C(=O)N[Si](C)(C)C)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1588.8 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,3TMS,isomer #1 | C[C@@H](CN(C(=O)N[Si](C)(C)C)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1906.1 | Standard polar | 33892256 |
| Ureidoisobutyric acid,3TMS,isomer #2 | C[C@@H](CNC(=O)N([Si](C)(C)C)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1716.2 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,3TMS,isomer #2 | C[C@@H](CNC(=O)N([Si](C)(C)C)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1597.4 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,3TMS,isomer #2 | C[C@@H](CNC(=O)N([Si](C)(C)C)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1974.5 | Standard polar | 33892256 |
| Ureidoisobutyric acid,3TMS,isomer #3 | C[C@@H](CN(C(=O)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C)C(=O)O | 1730.8 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,3TMS,isomer #3 | C[C@@H](CN(C(=O)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C)C(=O)O | 1741.1 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,3TMS,isomer #3 | C[C@@H](CN(C(=O)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C)C(=O)O | 1996.4 | Standard polar | 33892256 |
| Ureidoisobutyric acid,4TMS,isomer #1 | C[C@@H](CN(C(=O)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1765.1 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,4TMS,isomer #1 | C[C@@H](CN(C(=O)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1757.2 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,4TMS,isomer #1 | C[C@@H](CN(C(=O)N([Si](C)(C)C)[Si](C)(C)C)[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1711.6 | Standard polar | 33892256 |
| Ureidoisobutyric acid,1TBDMS,isomer #1 | C[C@@H](CNC(N)=O)C(=O)O[Si](C)(C)C(C)(C)C | 1836.8 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,1TBDMS,isomer #2 | C[C@@H](CNC(=O)N[Si](C)(C)C(C)(C)C)C(=O)O | 1894.6 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,1TBDMS,isomer #3 | C[C@@H](CN(C(N)=O)[Si](C)(C)C(C)(C)C)C(=O)O | 1833.6 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #1 | C[C@@H](CNC(=O)N[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2120.7 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #1 | C[C@@H](CNC(=O)N[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 1890.5 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #1 | C[C@@H](CNC(=O)N[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2274.3 | Standard polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #2 | C[C@@H](CN(C(N)=O)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2030.3 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #2 | C[C@@H](CN(C(N)=O)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 1976.5 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #2 | C[C@@H](CN(C(N)=O)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2477.5 | Standard polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #3 | C[C@@H](CN(C(=O)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O | 2123.1 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #3 | C[C@@H](CN(C(=O)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O | 1993.1 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #3 | C[C@@H](CN(C(=O)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O | 2327.8 | Standard polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #4 | C[C@@H](CNC(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O | 2164.2 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #4 | C[C@@H](CNC(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O | 1981.5 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,2TBDMS,isomer #4 | C[C@@H](CNC(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O | 2351.2 | Standard polar | 33892256 |
| Ureidoisobutyric acid,3TBDMS,isomer #1 | C[C@@H](CN(C(=O)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2325.1 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,3TBDMS,isomer #1 | C[C@@H](CN(C(=O)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2208.7 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,3TBDMS,isomer #1 | C[C@@H](CN(C(=O)N[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2243.4 | Standard polar | 33892256 |
| Ureidoisobutyric acid,3TBDMS,isomer #2 | C[C@@H](CNC(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2352.5 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,3TBDMS,isomer #2 | C[C@@H](CNC(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2233.1 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,3TBDMS,isomer #2 | C[C@@H](CNC(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2248.5 | Standard polar | 33892256 |
| Ureidoisobutyric acid,3TBDMS,isomer #3 | C[C@@H](CN(C(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O | 2384.0 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,3TBDMS,isomer #3 | C[C@@H](CN(C(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O | 2313.1 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,3TBDMS,isomer #3 | C[C@@H](CN(C(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O | 2289.0 | Standard polar | 33892256 |
| Ureidoisobutyric acid,4TBDMS,isomer #1 | C[C@@H](CN(C(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2599.9 | Semi standard non polar | 33892256 |
| Ureidoisobutyric acid,4TBDMS,isomer #1 | C[C@@H](CN(C(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2520.8 | Standard non polar | 33892256 |
| Ureidoisobutyric acid,4TBDMS,isomer #1 | C[C@@H](CN(C(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2215.7 | Standard polar | 33892256 |