Calcium Dobesilate

Name: Calcium Dobesilate
Brand: Vaqora Chemicals
SKU: VQ-004083

About Calcium Dobesilate

Calcium Dobesilate (CAS 20123-80-2) is a cardiovascular API offered by Vaqora Chemicals (IP/BP/USP grade), specified at ≥99% purity. With the molecular formula C12H10CaO10S2, it has a molar mass of 418.4 g/mol. Its systematic (IUPAC) name is calcium bis(2,5-dihydroxybenzenesulfonate). Common synonyms include Dexium and Dobesilate calcium.

The material typically appears as a white powder. Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Warning” with 2 hazard statements. Review the Safety Data Sheet before use.

This API belongs to our cardiovascular and antihypertensive APIs portfolio and is supplied to IP/BP/USP specifications for formulators, contract manufacturers and generic drug developers. Our customers for this product work in pharmaceutical manufacturing.

Vaqora Chemicals supplies Calcium Dobesilate in 1 kg, 5 kg and 25 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Pharmaceutical formulation
Generic drug development

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Calcium Dobesilate
Catalogue No.	VQ-004083
CAS Number	20123-80-2
IUPAC name	calcium bis(2,5-dihydroxybenzenesulfonate)
Molecular formula	C₁₂H₁₀CaO₁₀S₂
Molecular weight	418.4 g/mol
Exact mass	417.9341
Grade	IP/BP/USP
Purity / assay	≥99%
InChIKey	QGNBTYAQAPLTMX-UHFFFAOYSA-L
SMILES	C1=CC(=C(C=C1O)S(=O)(=O)[O-])O.C1=CC(=C(C=C1O)S(=O)(=O)[O-])O.[Ca+2]
PubChem CID	29963

Physical properties
Physical form	Powder
Appearance	White powder
H-bond donors / acceptors	4 / 10
TPSA	212 Å²
Synonyms	Dexium, Dobesilate calcium, Doxium, Dobesilate de calcium, Calcii dobesilas, Benzenesulfonic acid, 2,5-dihydroxy-, calcium salt (2:1), Hydroquinone calcium sulfonate, dobesilato de calcio, calcio dobesilato, Calcium, Dobesilate, Dobesilate, Calcium, Doxium 500

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation

Precautionary statements: P264, P264 + P265, P280, P302 + P352, P305 + P351 + P338, P321, P332 + P317, P337 + P317, P362 + P364

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 Calcium Dobesilate?

The CAS Registry Number of Calcium Dobesilate is 20123-80-2. It is also known as Dexium, Dobesilate calcium, Doxium.

What is the molecular formula and molecular weight of Calcium Dobesilate?

Calcium Dobesilate has the molecular formula C12H10CaO10S2 and a molecular weight of 418.4 g/mol. Its IUPAC name is calcium bis(2,5-dihydroxybenzenesulfonate).

Which grade and pack sizes of Calcium Dobesilate can I order?

We supply Calcium Dobesilate in IP/BP/USP (≥99%) grade, in 1 kg, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Calcium Dobesilate?

Yes. Every lot of Calcium Dobesilate 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 Calcium Dobesilate be shipped internationally?

Yes. Calcium Dobesilate 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.