Jenner's Stain Chemical Structure

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Jenner’s Stain or Methylene Blue Eosinate is a dye used for staining blood smears in microscopy. Additionally, it can be utilized for chromosome staining through the application of the C-banding approach, as well as for normal blood examinations and malarial staining.

Macsen Laboratories is the leading manufacturer and supplier of Jenner's Stain with ISO certification.
Name of Product Jenner's Stain
IUPAC Name potassium;2,4,5,7-tetrabromo-9-(2-methoxycarbonylphenyl)-6-oxoxanthen-3-olate
Synonyms Eosinmethylene-blue; Methyl Eosin; C.I.45385
CAS No 62851-42-7; 6359-04-2
Molecular Formula C21H9Br4KO5
Molecular Weight 700.0 g/mol
Color Index No 45385
Pubchem CID 50741774


SR. No Criteria Limit/Specification
1 Appearance Greenish black Powder
2 Solubility (Turbidity) 0.1% solution in Methano Clear
3 Solubility (Colour) 0.1% solution in Methanol Blue solution with green fluorescence
4 A 1% methanol@524 nm
A 1% methanol@653 nm
Min. 600
Min. 1100
5 Loss on drying Max. 10.0%
6 Suitability as a stain for microscopy Must passes test
Applications: Jenner's Stain is used mainly as a Biological Stain.
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