C.I. Direct Blue 21 structure

C.I. Direct Blue 21

TL;DR: C.I. Direct Blue 21 (CAS 6420-09-3) is a chemical compound with molecular formula C34H24N5Na3O11S3 and molecular weight 843.03 g/mol, supplied by Kehong Biological (Henan Kehong Biological Technology Co., Ltd.) with CRO/CDMO custom synthesis services.

trisodium;5-amino-4-hydroxy-3-[[4-[4-[(1-hydroxy-4-sulfonatonaphthalen-2-yl)diazenyl]-3-methylphenyl]-2-methylphenyl]diazenyl]naphthalene-2,7-disulfonate

Also Known As: Azocard Blue BX, Enianil Blue BX, Niagara Blue BG, Diazol Blue V, Diazol Blue BX

CAS: 6420-09-3
Molecular Formula C34H24N5Na3O11S3
Molecular Weight 843.03 g/mol
LogP -2.17466
Topological Polar Surface Area 313.0 Ų
Hydrogen Bond Donors 3
Hydrogen Bond Acceptors 16
Rotatable Bonds 5
Exact Mass 843.0328
Heavy Atoms 56
Complexity 1640.0

Chemical Identifiers

CAS Number 6420-09-3
SMILES CC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C4=C(C=C(C=C4C=C3S(=O)(=O)[O-])S(=O)(=O)[O-])N)O)C)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])O.[Na+].[Na+].[Na+]
InChIKey YLDQHFZDOYJEKB-UHFFFAOYSA-K

Product Overview

C.I. Direct Blue 21 (CAS 6420-09-3), with molecular formula C34H24N5Na3O11S3 and molecular weight 843.03 g/mol. IUPAC: trisodium;5-amino-4-hydroxy-3-[[4-[4-[(1-hydroxy-4-sulfonatonaphthalen-2-yl)diazenyl]-3-methylphenyl]-2-methylphenyl]diazenyl]naphthalene-2,7-disulfonate.

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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 C.I. Direct Blue 21

XLogP
-2.17466
TPSA (Topological Polar Surface Area)
313.0
Hydrogen Bond Donors
3
Hydrogen Bond Acceptors
16
Rotatable Bonds
5
Heavy Atoms
56
Complexity
1640.0
Exact Mass
843.0328
Monoisotopic Mass
843.0328
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 C.I. Direct Blue 21

The XLogP value of -2.17466 indicates that C.I. Direct Blue 21 is hydrophilic (water-soluble), making it suitable for aqueous formulations and biological assay applications. The TPSA of 313.0 Ų indicates high polarity, suggesting C.I. Direct Blue 21 may have limited membrane permeability but good aqueous solubility. Following Lipinski's Rule of Five, C.I. Direct Blue 21 has 3 hydrogen bond donor(s) and 16 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 C.I. Direct Blue 21?

The CAS number of C.I. Direct Blue 21 is 6420-09-3.

What is the molecular formula of C.I. Direct Blue 21?

The molecular formula of C.I. Direct Blue 21 is C34H24N5Na3O11S3.

What is the molecular weight of C.I. Direct Blue 21?

The molecular weight of C.I. Direct Blue 21 is 843.03 g/mol.

Where can I buy C.I. Direct Blue 21?

You can request a quote for C.I. Direct Blue 21 directly from KEHONG BIO. Contact us or email info@kehongbio.com for pricing and availability.

Does KEHONG BIO offer custom synthesis for C.I. Direct Blue 21?

Yes, KEHONG BIO provides custom synthesis services for C.I. Direct Blue 21 and related compounds. Contact us with your specific requirements including quantity, purity, and timeline.

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