Shikalkin

Name: Shikalkin
Brand: Vaqora Chemicals
SKU: VQ-040033

About Shikalkin

Vaqora Chemicals supplies Shikalkin, a carbonyl building block registered under CAS number 54952-43-1. Formula C16H16O5, molecular weight 288.29 g/mol. Systematically, it is named 5,8-dihydroxy-2-(1-hydroxy-4-methylpent-3-enyl)naphthalene-1,4-dione. Alternative names: (+-)-Shikonin and C.I. Natural Red 20.

Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Key uses span organic synthesis, condensation and reductive amination, API intermediates and fine chemical synthesis. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Shikalkin in 100 mg, 250 mg, 1 g and 5 g packs, each shipped with a Certificate of Analysis (COA), and exports worldwide. SDS and detailed specification sheets can be requested with your quotation. Custom pack sizes, bulk quantities and specific analytical data can be arranged on request.

Typical applications

Organic synthesis
Condensation & reductive amination
API intermediates
Fine chemical synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Shikalkin
Catalogue No.	VQ-040033
CAS Number	54952-43-1
IUPAC name	5,8-dihydroxy-2-(1-hydroxy-4-methylpent-3-enyl)naphthalene-1,4-dione
Molecular formula	C₁₆H₁₆O₅
Molecular weight	288.29 g/mol
Exact mass	288.0998
InChIKey	NEZONWMXZKDMKF-UHFFFAOYSA-N
SMILES	CC(=CCC(C1=CC(=O)C2=C(C=CC(=C2C1=O)O)O)O)C
PubChem CID	5208

Physical properties
Physical form	Other
LogP (XLogP3)	3
H-bond donors / acceptors	3 / 5
TPSA	94.8 Å²
Synonyms	(+-)-Shikonin, C.I. Natural Red 20, (Rac)-Shikonin, (+/-)-Shikonin, (+/-)-Alkannin, ( inverted exclamation markA)-Shikonin, 5,8-dihydroxy-2-(1-hydroxy-4-methyl-pent-3-enyl)naphthalene-1,4-dione, 1,4-Naphthalenedione, 5,8-dihydroxy-2-(1-hydroxy-4-methyl-3-pentenyl)- (9CI), 1, 5,8-dihydroxy-2-(1-hydroxy-4-methyl-3-pentenyl)-, (S)-, 5,8-Dihydroxy-6-(1-hydroxy-4-methylpent-3-en-1-yl)naphthalene-1,4-dione, (+-)-Alkannin, C.I. Natural Red 20 (VAN)

Safety & hazard information (GHS)

Harmful / irritant

Environmental hazard

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H400Very toxic to aquatic life

Precautionary statements: P264, P270, P273, P301 + P317, P330, P391, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Shikalkin?

The CAS Registry Number of Shikalkin is 54952-43-1. It is also known as (+-)-Shikonin, C.I. Natural Red 20, (Rac)-Shikonin.

What is the molecular formula and molecular weight of Shikalkin?

Shikalkin has the molecular formula C16H16O5 and a molecular weight of 288.29 g/mol. Its IUPAC name is 5,8-dihydroxy-2-(1-hydroxy-4-methylpent-3-enyl)naphthalene-1,4-dione.

Which grade and pack sizes of Shikalkin can I order?

We supply Shikalkin, in 100 mg, 250 mg, 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Shikalkin?

Yes. Every lot of Shikalkin is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Shikalkin be shipped internationally?

Yes. Shikalkin is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.