Direct Fast Yellow structure

Direct Fast Yellow

TL;DR: Direct Fast Yellow (CAS 78776-18-8) is a chemical compound with molecular formula C26H18N6Na2O8S and molecular weight 620.07 g/mol, supplied by Kehong Biological (Henan Kehong Biological Technology Co., Ltd.) with CRO/CDMO custom synthesis services.

disodium;2-hydroxy-5-[[4-[[4-[(4-hydroxy-3-sulfonatophenyl)diazenyl]phenyl]carbamoylamino]phenyl]diazenyl]benzoate

Also Known As: Direct Fast Yellow, Benzoic acid, 2-hydroxy-5-((4-((((4-((4-hydroxy-3-sulfophenyl)azo)phenyl)amino)carbonyl)amino)phenyl)azo)-, disodium salt, Disodium;2-hydroxy-5-[[4-[[4-[(4-hydroxy-3-sulfonatophenyl)diazenyl]phenyl]carbamoylamino]phenyl]diazenyl]benzoate

CAS: 78776-18-8
Molecular Formula C26H18N6Na2O8S
Molecular Weight 620.07 g/mol
LogP -1.1518
Topological Polar Surface Area 237.0 Ų
Hydrogen Bond Donors 4
Hydrogen Bond Acceptors 12
Rotatable Bonds 6
Exact Mass 620.07025
Heavy Atoms 43
Complexity 1030.0

Chemical Identifiers

CAS Number 78776-18-8
SMILES C1=CC(=CC=C1NC(=O)NC2=CC=C(C=C2)N=NC3=CC(=C(C=C3)O)S(=O)(=O)[O-])N=NC4=CC(=C(C=C4)O)C(=O)[O-].[Na+].[Na+]
InChIKey AURFCDUEAFXGPY-UHFFFAOYSA-L

Product Overview

Direct Fast Yellow (CAS 78776-18-8), with molecular formula C26H18N6Na2O8S and molecular weight 620.07 g/mol. IUPAC: disodium;2-hydroxy-5-[[4-[[4-[(4-hydroxy-3-sulfonatophenyl)diazenyl]phenyl]carbamoylamino]phenyl]diazenyl]benzoate.

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Safety Data Sheet (MSDS / SDS) View the Laboratory Chemical Safety Summary (LCSS) on PubChem — includes GHS classifications, hazard statements, first aid measures, and handling precautions.
View MSDS →

Chemical Property Profile of Direct Fast Yellow

XLogP
-1.1518
TPSA (Topological Polar Surface Area)
237.0
Hydrogen Bond Donors
4
Hydrogen Bond Acceptors
12
Rotatable Bonds
6
Heavy Atoms
43
Complexity
1030.0
Exact Mass
620.07025
Monoisotopic Mass
620.07025
Data Source: Chemical property values are referenced from PubChem, the world's largest open chemistry database maintained by the National Center for Biotechnology Information (NCBI), U.S. National Library of Medicine.

Property Insights of Direct Fast Yellow

The XLogP value of -1.1518 indicates that Direct Fast Yellow is hydrophilic (water-soluble), making it suitable for aqueous formulations and biological assay applications. The TPSA of 237.0 Ų indicates high polarity, suggesting Direct Fast Yellow may have limited membrane permeability but good aqueous solubility. Following Lipinski's Rule of Five, Direct Fast Yellow has 4 hydrogen bond donor(s) and 12 hydrogen bond acceptor(s), which may warrant consideration for formulation optimization.

Frequently Asked Questions

What is the typical lead time for this product?
Lead time typically ranges from 3-7 business days for in-stock items. For larger quantities or custom orders, please contact us for specific lead times.
Can you provide samples for testing?
Yes, we offer sample quantities for quality testing. Please submit an inquiry with your requirements and we will arrange samples accordingly.
What documentation do you provide with the product?
We provide COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), and technical data sheets with each shipment.
Do you ship internationally?
Yes, we ship to most countries worldwide. Shipping costs and delivery times vary by location. Please contact us for specific shipping information.

Frequently Asked Questions

What is the CAS number of Direct Fast Yellow?

The CAS number of Direct Fast Yellow is 78776-18-8.

What is the molecular formula of Direct Fast Yellow?

The molecular formula of Direct Fast Yellow is C26H18N6Na2O8S.

What is the molecular weight of Direct Fast Yellow?

The molecular weight of Direct Fast Yellow is 620.07 g/mol.

Where can I buy Direct Fast Yellow?

You can request a quote for Direct Fast Yellow directly from KEHONG BIO. Contact us or email info@kehongbio.com for pricing and availability.

Does KEHONG BIO offer custom synthesis for Direct Fast Yellow?

Yes, KEHONG BIO provides custom synthesis services for Direct Fast Yellow and related compounds. Contact us with your specific requirements including quantity, purity, and timeline.

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