GRADE & PURITYBiological stain?Biological stain grade — dyes characterized for staining cells and tissues. Use in histology and microscopy where staining consistency matters.
Synonyms
C.I. DIRECT BLUE 15 [HSDB] | Tetrasodium 3,3'-((3,3'-dimethoxy(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(5-amino-4-hydroxynaphthalene-2,7-disulphonate) | Amanil Sky Blue | HSDB 4227 | Sky Blue 5B | Atul Direct Sky Blue | CHEBI:82305 | Diazol Pure Blue 4B | 5C
Biological stain Biological stain for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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Storage & shipping
Room temperature Ships Normal Check lot-specific COA for exact specifications.
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Quality documents
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
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Literature proof
Cited in 3 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Overview
Direct Blue 15 is a dimethoxybenzidine-based dye which is reported to be useful as a substitute for trypan blue in some biological and staining applications. This dye has been utilized in research analyzing the degradation of this and other azo dyes by intestinal microflora. Other reports indicate that this dye can be degraded by peroxidase enzymes from the plants|Ipomea palmata|and|Saccharum spontaneum|.|Other direct dyes offered include: Direct Red 23 , Direct Red 80 , Direct Red 81 , Direct Yellow 27 , Direct yellow 50 , Direct Blue 71 and Direct Violet 51 .
Specifications
Synonyms
C.I. DIRECT BLUE 15 [HSDB] | Tetrasodium 3,3'-((3,3'-dimethoxy(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(5-amino-4-hydroxynaphthalene-2,7-disulphonate) | Amanil Sky Blue | HSDB 4227 | Sky Blue 5B | Atul Direct Sky Blue | CHEBI:82305 | Diazol Pure Blue 4B | 5C
This compound belongs to the class of organic compounds known as 3,3'-disubstituted benzidines. These are organic compounds containing a benzidine skeleton, which is substituted only at the 3- and 3'-positions.
External Descriptors
Not available
1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.
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Frequently Asked Questions
What does Biological Stain mean?
Biological Stain indicates that the product has been processed and tested for biological and biochemical applications. Specifications may include endotoxin limits, microbial controls, sterility, low DNase/RNase/protease activity, and verified biological activity where relevant.
How should this product be stored?
Store at room temperature.
How is this product shipped?
This product ships under standard ambient conditions. No temperature-controlled packaging is required.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 2429-74-5, the molecular formula is C34H24N6Na4O16S4, and the molecular weight is 992.8 g/mol. InChIKey OLSOUGWNONTDCK-UHFFFAOYSA-J.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.
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