Skip to Content
Merck
CN

PHL89818

(+)-Usnic acid

phyproof® Reference Substance

Synonym(s):

2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3(2H,9bH)-dione

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Empirical Formula (Hill Notation):
C18H16O7
CAS Number:
Molecular Weight:
344.32
NACRES:
NA.24
UNSPSC Code:
41116107
Beilstein/REAXYS Number:
96698
MDL number:
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist


grade

primary reference standard

product line

phyproof® Reference Substance

assay

≥98.0% (HPLC)

manufacturer/tradename

PhytoLab

mp

201-203 °C (lit.)

application(s)

food and beverages

format

neat

SMILES string

C[C@](C1=C(O)C(C)=C(O)C(C(C)=O)=C1O2)(C(C3C(C)=O)=O)C2=CC3=O

InChI

1S/C18H16O7/c1-6-14(22)12(8(3)20)16-13(15(6)23)18(4)10(25-16)5-9(21)11(7(2)19)17(18)24/h5,22-24H,1-4H3/t18-/m1/s1

InChI key

ICTZCAHDGHPRQR-GOSISDBHSA-N

General description

This substance is a primary reference substance with assigned absolute purity (considering chromatographic purity, water, residual solvents, inorganic impurities). The exact value can be found on the certificate. Produced by PhytoLab GmbH & Co. KG

Legal Information

phyproof is a registered trademark of PhytoLab GmbH & Co. KG


Still not finding the right product?

Explore all of our products under (+)-Usnic acid


pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable



Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library