Direct Red 73 free acid

4-hydroxy-7-[[5-hydroxy-6-[(2-methylphenyl)diazenyl]-7-sulfonaphthalen-2-yl]carbamoylamino]-3-[(6-sulfonaphthalen-2-yl)diazenyl]naphthalene-2-sulfonic acid

CAS: 739301-94-1

Molecular Formula	`C38H28N6O12S3`
Molecular Weight	856.9 g/mol
LogP	5.7
Topological Polar Surface Area	319.0 A2
Hydrogen Bond Donors	7
Hydrogen Bond Acceptors	16
Rotatable Bonds	9
Exact Mass	856.0927
Heavy Atoms	59
Complexity	1890.0

Chemical Identifiers

CAS Number	739301-94-1
SMILES	`CC1=CC=CC=C1N=NC2=C(C=C3C=C(C=CC3=C2O)NC(=O)NC4=CC5=CC(=C(C(=C5C=C4)O)N=NC6=CC7=C(C=C6)C=C(C=C7)S(=O)(=O)O)S(=O)(=O)O)S(=O)(=O)O`
InChIKey	`MTYFLWBSAJJYJS-UHFFFAOYSA-N`

📖 Product Overview

Direct Red 73 free acid (CAS: 739301-94-1) is a chemical compound with molecular formula C38H28N6O12S3 and molecular weight 856.9 g/mol. Its IUPAC systematic name is 4-hydroxy-7-[[5-hydroxy-6-[(2-methylphenyl)diazenyl]-7-sulfonaphthalen-2-yl]carbamoylamino]-3-[(6-sulfonaphthalen-2-yl)diazenyl]naphthalene-2-sulfonic acid. LogP 5.7 Topological Polar Surface Area 319.0 A2 Hydrogen Bond Donors 7 Hydrogen Bond Acceptors 16 Rotatable Bonds 9 Exact Mass 856.0927 Heavy Atoms 59 Complexity 1890.0 InChI Key: MTYFLWBSAJJYJS-UHFFFAOYSA-N. SMILES: CC1=CC=CC=C1N=NC2=C(C=C3C=C(C=CC3=C2O)NC(=O)NC4=CC5=CC(=C(C(=C5C=C4)O)N=NC6=CC7=C(C=C6)C=C(C=C7)S(=O)(=O)O)S(=O)(=O)O)S(=O)(=O)O.

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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.

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Frequently Asked Questions

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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.

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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.

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