3,7-Diamino-5-phenothiazinium acetate 78338-22-4 Lauth inverted exclamation mark s violet Thionin acetate salt CAS 78338-22-4

Purity 97%+In StockPharmaceutical Standards
CAS No.78338-22-4
Molecular FormulaC12H23N3S
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3,7-Diamino-5-phenothiazinium acetate 78338-22-4 Lauth inverted exclamation mark s violet Thionin acetate salt CAS 78338-22-4 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3,7-Diamino-5-phenothiazinium acetate 78338-22-4 Lauth inverted exclamation mark s violet Thionin acetate salt.

3,7-Diamino-5-phenothiazinium acetate 78338-22-4 Lauth inverted exclamation mark s violet Thionin acetate salt (CAS 78338-22-4), molecular formula C12H23N3SC2H3O2 and molecular weight 300.44 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 3,7-Diamino-5-phenothiazinium acetate 78338-22-4 Lauth inverted exclamation mark s violet Thionin acetate salt (C12H23N3SC2H3O2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.5, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 300.44 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

As a certified reference material (CRM), 3,7-Diamino-5-phenothiazinium acetate 78338-22-4 Lauth inverted exclamation mark s violet Thionin acetate salt meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC12H23N3S C2H3O2
Molecular Weight300.44 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.5
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1979
Nitrogen Atoms3
Sulfur Atoms1

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