C.I. Direct Yellow 4
TL;DR: C.I. Direct Yellow 4 (CAS 91-34-9) is a chemical compound with molecular formula C26H20N4O8S2 and molecular weight 580.07 g/mol, supplied by Kehong Biological (Henan Kehong Biological Technology Co., Ltd.) with CRO/CDMO custom synthesis services.
5-[(4-hydroxyphenyl)diazenyl]-2-[2-[4-[(4-hydroxyphenyl)diazenyl]-2-sulfophenyl]ethenyl]benzenesulfonic acid
Also Known As: Direct Yellow 4, Direct Yellow 4 dye, C.I. DIRECT YELLOW 4, C.I. Direct Yellow 4 (VAN), 4,4'-bis[azo]stilbene-2,2'-disulphonicacid
| Molecular Formula | C26H20N4O8S2 |
|---|---|
| Molecular Weight | 580.07 g/mol |
| LogP | 4.5 |
| Topological Polar Surface Area | 215.0 Ų |
| Hydrogen Bond Donors | 4 |
| Hydrogen Bond Acceptors | 12 |
| Rotatable Bonds | 8 |
| Exact Mass | 580.07227 |
| Heavy Atoms | 40 |
| Complexity | 1030.0 |
Chemical Identifiers
| CAS Number | 91-34-9 |
|---|---|
| SMILES | C1=CC(=CC=C1N=NC2=CC(=C(C=C2)C=CC3=C(C=C(C=C3)N=NC4=CC=C(C=C4)O)S(=O)(=O)O)S(=O)(=O)O)O |
| InChIKey | HNJRBCJUHORNHV-UHFFFAOYSA-N |
Patent-Derived Application Labels
Derived from 2 IPC patent classification(s) across the SureChEMBL global patent database.
Product Overview
C.I. Direct Yellow 4 (CAS 91-34-9), with molecular formula C26H20N4O8S2 and molecular weight 580.07 g/mol. IUPAC: 5-[(4-hydroxyphenyl)diazenyl]-2-[2-[4-[(4-hydroxyphenyl)diazenyl]-2-sulfophenyl]ethenyl]benzenesulfonic acid.
Chemical Property Profile of C.I. Direct Yellow 4
Property Insights of C.I. Direct Yellow 4
The XLogP value of 4.5 indicates that C.I. Direct Yellow 4 is lipophilic (fat-soluble), which may influence its absorption, distribution, and formulation strategy. The TPSA of 215.0 Ų indicates high polarity, suggesting C.I. Direct Yellow 4 may have limited membrane permeability but good aqueous solubility. Following Lipinski's Rule of Five, C.I. Direct Yellow 4 has 4 hydrogen bond donor(s) and 12 hydrogen bond acceptor(s), which may warrant consideration for formulation optimization.
Frequently Asked Questions
Frequently Asked Questions
What is the CAS number of C.I. Direct Yellow 4?
The CAS number of C.I. Direct Yellow 4 is 91-34-9.
What is the molecular formula of C.I. Direct Yellow 4?
The molecular formula of C.I. Direct Yellow 4 is C26H20N4O8S2.
What is the molecular weight of C.I. Direct Yellow 4?
The molecular weight of C.I. Direct Yellow 4 is 580.07 g/mol.
Where can I buy C.I. Direct Yellow 4?
You can request a quote for C.I. Direct Yellow 4 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 Yellow 4?
Yes, KEHONG BIO provides custom synthesis services for C.I. Direct Yellow 4 and related compounds. Contact us with your specific requirements including quantity, purity, and timeline.