576321 A2P ascorbate 2-phosphate 8 655727 AsP ascorbate-2-phosphate 4 2388098 AsAP ascorbate-2-phosphate 2 2284805 Asc-2-P L-ascorbate-2-phosphate 2 541363 2-AP ascorbate-2-phosphate 1 576315 A-2-P ascorbate-2-phosphate 1 2388108 Asc-2 ascorbate-2-phosphate 1 2389315 AscP ascorbate-2-phosphate 1