Oroxylin A

Oroxylin A: flavone.

Purity and quantity by the chromatographic method matched to the compound (HPLC-UV, LC-MS or GC-MS), with identity against a reference standard. $250 per sample; raw powder purity $200. Results in 3 to 5 business days.

Structure

Oroxylin A: 2D structure drawn from the PubChem record (CID 5320315).

Compound data

CAS number

480-11-5

Formula

C₁₆H₁₂O₅

Molecular weight

284.26 g/mol (monoisotopic 284.07)

Type

flavone

Structure and names

IUPAC name: 5,7-dihydroxy-6-methoxy-2-phenylchromen-4-one

Other names: 5,7-dihydroxy-6-methoxyflavone

How Vanguard tests Oroxylin A

Identity, purity and quantity are measured by the chromatographic method matched to the compound (HPLC-UV, LC-MS or GC-MS) against a reference standard, $250 per sample with results in 3 to 5 business days.

What's reported

Purity, as percent of total peak area
Quantity, in mg per unit or % w/w against the label
Identity, reported as match or no match against the reference standard

Tests and prices

Purity and quantity

$250

Chromatographic purity and mg per unit by the method matched to the compound, identity against a reference standard. 1 unit.

Raw powder purity

$200

Chromatographic purity on bulk powder. 50 mg.

Add-on tests

Add-on test	Price
Identity and impurities
FTIR identity	$90
CHNS elemental analysis (carbon, hydrogen, nitrogen, sulfur)	$125
Chiral purity (where a chiral method exists; new methods quoted)	$250
Water, solvents and salt form
Water content by Karl Fischer	$60
Residual solvents	$150
Counterions: chloride, acetate and TFA	$70
Assay
Assay, % w/w (with raw powder purity; $250 together)	+$50
Metals and conformity
Heavy metals: arsenic, cadmium, chromium, mercury and lead	$150
Conformity: purity and quantity on more units from the same lot	$100 per extra unit
Microbiology (injectables)
Endotoxin	$210
Sterility or bioburden	$150
Container closure integrity (CCI)	$50
Screening
Fentanyl screen	$50

10% off for 10 or more samples.

Need something else? Other tests are available on request.

Sample amount and turnaround

Purity and quantity is $250 per sample (1 unit) and raw powder purity is $200 for 50 mg, with results in 3 to 5 business days.

Salts, forms and compendial references

Tell us the salt or form the label states, so quantity is reported on the same basis.
One page covers Oroxylin A and its salts and forms.

Questions about Oroxylin A testing

Can you tell oroxylin A from wogonin?

Yes. Wogonin is an isomer with the same mass, and HPLC retention time against reference standards tells them apart.

What does the purity result include?

The main peak's share of the total peak area by HPLC-UV. Related compounds above the reporting limit show as separate peaks, and LC-MS can identify them on request.

Sources

https://pubchem.ncbi.nlm.nih.gov/compound/5320315

Order

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