Base-protected Nucleosides
2'-O-4'-C-Locked-rC(Bz)
Quick view. N4-benzoyl-protected cytidine with a 2'-O,4'-C methylene-locked sugar and free 3' and 5' hydroxyl groups. CAS 221229-74-9. Catalog target purity: ≥98%. Availability: Inquiry only — contact BX Lab to confirm current availability.

Product profile
2'-O-4'-C-Locked-rC(Bz) is classified as base-protected nucleosides (Formula C17H17N3O6; molecular weight 359.33 g/mol).
2'-O-4'-C-Locked-rC(Bz) is useful for high-affinity probes, SNP/mismatch-discrimination studies, antisense designs and short sequence probes.
For 2'-O-4'-C-Locked-rC(Bz), high-affinity monomers require careful positional design; over-substitution may increase off-target binding or complicate synthesis.
Names and search terms
Confirmed or normalized name variants
- N4-Benzoyl-2'-O,4'-C-methylenecytidine
- LNA-N4-Bz-C
Useful catalog search terms
- 221229-74-9
Physicochemical data
| Sugar modification | 2'-O,4'-C methylene bridge |
|---|---|
| Nucleobase protection | N4-benzoyl |
| 5-position substitution | Unsubstituted |
| Hydroxyl state | 3' and 5' hydroxyl groups unprotected |
Release documentation
The current specification defines the analytical method and acceptance criteria; the released lot result is reported on the CoA.
Additional HPLC, MS or NMR documentation can be agreed during technical review where available.
Product-specific evaluation notes
Potential advantages
- Locked/bicyclic sugar motifs can substantially increase duplex thermal stability and mismatch discrimination.
Method limitations
- High-affinity monomers require careful positional design; over-substitution may increase off-target binding or complicate synthesis.
These points describe 2'-O-4'-C-Locked-rC(Bz) or its named chemical feature. Broader product-family guidance is maintained on the category page.
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Frequently asked questions
Can the package size for 2'-O-4'-C-Locked-rC(Bz) be customized?
Yes. Share the initial quantity, expected future scale, delivery timeline and packaging preference for review.
What information should be included in a quote request?
Quote catalog number BX-PN-0007 and CAS 221229-74-9, the intended research workflow, required quantity and any additional HPLC, MS or NMR documentation needed.
Feature and workflow background
These publications discuss a broader chemistry feature or workflow identified from the catalog name or product family. They are background reading only, not evidence for the exact BX Lab product, supplied form, lot specification, availability or performance.
Technology platforms
Catalog-derived platform membership for navigating related chemistry and verifiable product sets.
