1046351

Azure B

United States Pharmacopeia (USP) Reference Standard

• Synonym(s): N,N,N′-Trimethylthionin, Azure I, Methyleneazure
• Empirical Formula (Hill Notation): C₁₅H₁₆ClN₃S
• CAS Number: 531-55-5
• Molecular Weight: 305.83
• PubChem Substance ID: 329749094
• UNSPSC Code: 41116107
• NACRES: NA.24
• MDL number: MFCD00011935
• Colour Index Number: 52010
• Beilstein/REAXYS Number: 3922630

Properties

• grade: pharmaceutical primary standard
• agency: USP
• API family: azure b
• manufacturer/tradename: USP
• mp: 205-210 °C (dec.) (lit.)
• application(s): pharmaceutical (small molecule); pharmaceutical; pharmaceutical
• format: neat
• storage temp.: 2-8°C
• SMILES string: C[N+](C)=C(C=C1)C=C(C1=N2)SC3=C2C=CC(NC)=C3.[Cl-]
• InChI: 1S/C15H15N3S.ClH/c1-16-10-4-6-12-14(8-10)19-15-9-11(18(2)3)5-7-13(15)17-12;/h4-9H,1-3H3;1H
• InChI key: DNDJEIWCTMMZBX-UHFFFAOYSA-N

Description

General description

Find answers to frequently asked questions on USP products in USP FAQs.

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including MSDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.
For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Azure B USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monographs such as:

• Methylene Blue
• Methylene Blue Injection

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Safety Information

• Storage Class: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable