Fully Liquid Phase Oligonucleotide Synthesis
Bibliographic record
Abstract
Representative oligonucleotides (oligos), a 21-mer siRNA strand and a 16-mer ASO-like gapmer, were synthesized by Nanostar Sieving, a membrane-assisted liquid phase oligo synthesis (LPOS) method, at a 10 mmol scale and 20 mM concentration in a single solvent. This process is the first total LPOS beyond 10-mer, i.e., the reagents and intermediates remain in the liquid phase from the very first reaction to isolation. At all times during the synthesis of the full-length product, the concentration of oligos within the Nanostar-10 reactor remained roughly constant. Both sequences were synthesized four times, twice using membrane sheets clamped flat in circular cells and twice using scalable spiral wound modules. Cleavage and deprotection continued to maintain the oligo in the liquid phase until the final lyophilization, when yields were calculated from the optical density, adjusting for chromatographic and mass spectral purity. Synthetic process mass intensities approaching those of solid phase oligo synthesis (SPOS) were achieved.
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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 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.015 | 0.011 |
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".