Table 1.
Major OS species investigated in this study.
| Name (code) | Compositiona | m/z b |
|---|---|---|
| Triose | 3 Hex | 503.1612 |
| 3′-sialyllactose (3′-SL) | 2 Hex, 1 NeuAc | 632.2038 |
| 6′-sialyllactose (6′-SL) | 2 Hex, 1 NeuAc | 632.2038 |
| 6′-sialyl-N-acetyllactosamine (6′-SLN) | 1 Hex, 1 HexNAc, 1 NeuAc | 673.2304 |
| Disialyllactose (DSL) | 2 Hex, 2 NeuAc | 923.2992 |
| N-acetylgalactosaminyllactose (GNL) | 2 Hex, 1 HexNAc | 544.1878 |
| 3′-sialylgalactosyllactose (OS-A) | 3 Hex, 1 NeuAc | 794.2566 |
| Lacto-N-pentaose (OS-B) | 4 Hex, 1 HexNAc | 868.2934 |
| Lacto-N-neotetraose (OS-C) | 3 Hex, 1 HexNAc | 706.2406 |
| Di-N-acetylhexosaminyltriose (OS-D) | 3 Hex, 2 HexNAc | 909.3200 |
| 3′-glycolylneuraminyllactose (OS-E) | 2 Hex, 1 NeuGc | 648.1987 |
| 3′-sialyl-N-acetylglucosaminyllactose (OS-F) | 2 Hex, 1 HexNAc, 1 NeuAc | 835.2832 |
aHex: glucose or galactose; HexNAc: N-acetylglucosamine or N-acetylgalactosamine; NeuAc: N-acetylneuraminic acid (sialic acid); NeuGc: N-glycolylneuraminic acid.
bCalculated m/z values for deprotonated molecular ions (detected in negative ion mode).