Catalog

Product Catalog

A growing collection of analytically documented natural product standards manufactured and characterized by Sylverity. Browse product pages for stocked, made-to-order, and inquiry-based compounds supplied in research-grade milligram quantities.

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Stilbenoids

cis-Resveratrol

CAS 61434-67-1

cis-Resveratrol (Z-resveratrol) analytical standard for isomer-resolved HPLC and LC-MS. In stock for research use. cis-Resveratrol is the Z stereoisomer of resveratrol, a nonflavonoid stilbene polyphenol. PubChem CID 1548910 identifies the Z-configured structure recorded here. It has been reported in Malus species, Botrytis cinerea, and other organisms, and can also form by photoisomerization of trans-resveratrol. In vitro studies have evaluated its antioxidant and inflammatory-signaling activity, inhibition of platelet aggregation, and antiviral activity against coxsackievirus B3 (IC50 12.2 µM) and enterovirus 71 (IC50 37.6 µM).

Purity

≥ 98% (HPLC)

Formula

C14H12O3

228.24

From

$65.00

5 mg / 10 mg / 25 mg / 50 mg

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Phenolics

Dracorhodin

CAS 643-56-1

Freebase Dracorhodin analytical standard for Dragon’s blood resin profiling and pigment analysis. In stock for research use. Dracorhodin is a red phenolic pigment reported in Dragon’s blood resin and used as a marker compound in resin analysis. This product is the neutral/freebase form, not dracorhodin perchlorate; the two forms have different CAS numbers, formulas, and molecular weights. It is suited to HPLC or LC-MS identity confirmation, resin-content assays, pigment characterization, and research evaluating antimicrobial or antioxidant activity.

Purity

≥ 98% (HPLC)

Formula

C17H14O3

266.29

From

$30.00

1 mg / 5 mg / 25 mg / 100 mg

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Stilbenoids

Vitisin B

CAS 142449-90-9

Vitisin B ((−)-Vitisin B) analytical standard for HPLC and LC-MS profiling of grapevine resveratrol tetramers. In stock for research use. 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.

Purity

≥ 98% (HPLC)

Formula

C56H42O12

906.9

From

$259.00

1 mg / 5 mg / 25 mg

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Stilbenoids

ε-Viniferin (epsilon-viniferin)

CAS 62218-08-0

Epsilon-viniferin (ε-viniferin), manufactured in-house for non-GMP research. In stock and ships from California. Epsilon-viniferin (also written e-viniferin) is a resveratrol dimer with an 8–10′ linkage and a dihydrobenzofuran core. It is suited to identity confirmation, chromatographic method development, and comparative profiling of resveratrol oligomers. Use the lot COA for assigned purity and stereochemical information.

Purity

≥ 98% (HPLC)

Formula

C28H22O6

454.5

From

$175.00

1 mg / 5 mg

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