<i>N</i>-[(Dimethylamino)[(2-oxo-1(2<i>H</i>)-pyridinyl)oxy]methylene]-<i>N</i>-methylmethanaminium tetrafluoroborate
Bibliographic record
Abstract
[125700-71-2] C10H16BF4N3O2 (MW 297.06) InChI = InChI=1S/C10H16N3O2.BF4/c1-11(2)10(12(3)4)15-13-8-6-5-7-9(13)14;2-1(3,4)5/h5-8H,1-4H3;/q+1;-1 InChIKey = CZQGINAUZYECAI-UHFFFAOYSA-N InChI = 1S/C10H16N3O2/c1-11(2)10(12(3)4)15-13-8-6-5-7-9(13)14/h5-8H,1-4H3/q+1 InChI Key = VPMAWWKDEFLLBU-UHFFFAOYSA-N (peptide coupling reagent providing high yield and low epimerization levels5; promotes lactamization of cyclic peptides6; regioselective amidation9a) Alternate Names: TPTU, O-(2-oxo-1(2H)pyridyl)- N,N,N′,N′-tetramethyluronium tetrafluoroborate. Physical Data: mp 140 °C (dec.). Solubility: soluble in CH2Cl2, DMF, DMSO, NMP, and CH3CN. Form Supplied in: white solid; widely available. Analysis of Reagent Purity: 1H NMR and HPLC. Handling, Storage, and Precautions: reagent should be kept refrigerated (≤8 °C) for long-term storage. Light-sensitive. Incompatibility: strong oxidizing agents. Avoid breathing dust and vapors; avoid contact with eyes and skin.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.020 | 0.008 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".