1S 3R 4R-Entecavir
Impurity reference standard
- CAS number
- 1367369-80-9 (free base)
- InChIKey
- YXPVEXCTPGULBZ-CGJXVAEWSA-N
- Molecular formula
- C12H17N5O4
- Molecular weight
- 295.30
- Exact mass
- 295.1281 Da
- Purity
- 95%+
- Appearance
- Light Yellow Solid
- Storage
- 2℃ ~ 8℃
About 1S 3R 4R-Entecavir
1S 3R 4R-Entecavir is supplied as an analytical reference standard. It is registered under CAS number 1367369-80-9.
The compound is characterised by its molecular formula C12H17N5O4 and a molecular weight of 295.30, with the two-dimensional structure shown above.
Each pack ships with a certificate of analysis reporting purity of 95%+ together with the supporting analytical data — HNMR, MS and HPLC or GC traces — so the material can be released straight into your own QC workflow. Recommended storage: 2℃ ~ 8℃.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
Frequently asked questions
What purity does 1S 3R 4R-Entecavir ship at?
1S 3R 4R-Entecavir is supplied at 95%+, as stated on the certificate of analysis issued with each pack.
Does 1S 3R 4R-Entecavir come with a certificate of analysis?
Yes. Every pack ships with a certificate of analysis plus the supporting analytical data — HNMR, MS and HPLC or GC traces.
How is 1S 3R 4R-Entecavir uniquely identified?
The InChIKey YXPVEXCTPGULBZ-CGJXVAEWSA-N identifies the structure unambiguously, so it can be matched against your own registry or a public database.
Is a structure file available for 1S 3R 4R-Entecavir?
Yes. The two-dimensional structure is drawn on this page from the SMILES record, and the SMILES or a molfile can be supplied on request.
What pack sizes are available for 1S 3R 4R-Entecavir?
Standard packs run from milligram to gram quantities and ship from stock. Larger or custom synthesis requirements are quoted on request.
How should 1S 3R 4R-Entecavir be stored?
Recommended storage: 2℃ ~ 8℃.
Need this standard, or a related one?
Send the compound name, CAS number or a structure file — we confirm availability, pack size and lead time, usually within one business day.