RUO - Not for Human Consumption
Stilbenoids
Vitisin B
CAS 142449-90-9
Catalog SYL-002
Procurement Options
Pack sizing, price visibility, and availability for direct checkout or inquiry.
Pack SizeList Price
1 mg
$259.00
5 mg
$777.00
25 mg
Contact for pricing
Contact for Pricing
In stock — ships from California
Request Vitisin B / (−)-Vitisin B by CAS 142449-90-9. Do not substitute Vitisin A / R2-viniferin.
COA available on requestSDS available on request
Vitisin B ((−)-Vitisin B) analytical standard for HPLC and LC-MS profiling of grapevine resveratrol tetramers. In stock for research use.
What is Vitisin B?
- CAS Number
- 142449-90-9
- Molecular Formula
- C56H42O12
- Molecular Weight
- 906.9
- Purity
- ≥ 98% (HPLC)
- Appearance
- Tan microcrystalline powder
- Solubility
- Soluble in DMSO, acetone, ethyl acetate, chloroform, and dichloromethane. Aqueous solubility is not established; confirm concentration and solution clarity experimentally.
- Stability
- Light-sensitive. Store the powder desiccated at −20°C. Aliquot stock solutions, protect them from light, and avoid repeated freeze-thaw cycles; use prepared solutions promptly.
Vitisin B is a stereochemically defined resveratrol tetramer reported in Vitis species. For CAS 142449-90-9, PubChem resolves this record as (−)-Vitisin B, CID 16138152. Analytical literature often calls Vitisin B R-viniferin, while R2-viniferin denotes Vitisin A; some databases apply these aliases inconsistently, so CAS number and InChIKey should control identification. This listing is not Vitisin A and not the unrelated pyranoanthocyanin wine pigment also called vitisin B.
Documentation
COA and SDS are available on request. Submit an inquiry for lot-specific analytical data.
Storage & Handling
Store the sealed vial desiccated at −20°C and protect it from light and moisture. Allow it to reach room temperature before opening. Aliquot stock solutions, minimize bench-light exposure, and avoid repeated freeze-thaw cycles.