8064-60-6 Primuline Primuline, sodium salt (2,6':2',6''-Terbenzothiazole)-7-sulfonic acid, 2''-(4-aminophenyl)-6-methyl-, monosodium salt, mixt. with 2'-(4-aminophenyl)-6-methyl(2,6-bibenzothiazole)-7-sulfonic acid monosodium salt (2,6'-:2',6''-Terbenzothiazole)-7-sulfonic acid, 2''-(4-aminophenyl)-6-methyl-, monosodium salt, mixture with 2'-(4-aminophenyl)-6-methyl(2,6'-benzothiazole)-7-sulfonic acid, monosodium salt C.I. 49000 C.I. Direct Yellow 7, sodium salt Direct Yellow 59 NSC 72275 Primulinesulfonic acid Thioflavine S CAS 8064-60-6

Purity 97%+In StockPharmaceutical Standards
CAS No.8064-60-6
Molecular FormulaC21H36N3O3S3
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

8064-60-6 Primuline Primuline, sodium salt (2,6':2',6''-Terbenzothiazole)-7-sulfonic acid, 2''-(4-aminophenyl)-6-methyl-, monosodium salt, mixt. with 2'-(4-aminophenyl)-6-methyl(2,6-bibenzothiazole)-7-sulfonic acid monosodium salt (2,6'-:2',6''-Terbenzothiazole)-7-sulfonic acid, 2''-(4-aminophenyl)-6-methyl-, monosodium salt, mixture with 2'-(4-aminophenyl)-6-methyl(2,6'-benzothiazole)-7-sulfonic acid, monosodium salt C.I. 49000 C.I. Direct Yellow 7, sodium salt Direct Yellow 59 NSC 72275 Primulinesulfonic acid Thioflavine S CAS 8064-60-6 chemical structure

Description

8064-60-6 Primuline Primuline, sodium salt (2,6':2',6''-Terbenzothiazole)-7-sulfonic acid, 2''-(4-aminophenyl)-6-methyl-, monosodium salt, mixt. with 2'-(4-aminophenyl)-6-methyl(2,6-bibenzothiazole)-7-sulfonic acid monosodium salt (2,6'-:2',6''-Terbenzothiazole)-7-sulfonic acid, 2''-(4-aminophenyl)-6-methyl-, monosodium salt, mixture with 2'-(4-aminophenyl)-6-methyl(2,6'-benzothiazole)-7-sulfonic acid, monosodium salt C.I. 49000 C.I. Direct Yellow 7, sodium salt Direct Yellow 59 NSC 72275 Primulinesulfonic acid Thioflavine S (CAS 8064-60-6) is a high-purity analytical reference standard with the molecular formula C21H36N3O3S3Na and a molecular weight of 497.71 g/mol.

8064-60-6 Primuline Primuline, sodium salt (2,6':2',6''-Terbenzothiazole)-7-sulfonic acid, 2''-(4-aminophenyl)-6-methyl-, monosodium salt, mixt. with 2'-(4-aminophenyl)-6-methyl(2,6-bibenzothiazole)-7-sulfonic acid monosodium salt (2,6'-:2',6''-Terbenzothiazole)-7-sulfonic acid, 2''-(4-aminophenyl)-6-methyl-, monosodium salt, mixture with 2'-(4-aminophenyl)-6-methyl(2,6'-benzothiazole)-7-sulfonic acid, monosodium salt C.I. 49000 C.I. Direct Yellow 7, sodium salt Direct Yellow 59 NSC 72275 Primulinesulfonic acid Thioflavine S (C21H36N3O3S3Na) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

CATO manufactures 8064-60-6 Primuline Primuline, sodium salt (2,6':2',6''-Terbenzothiazole)-7-sulfonic acid, 2''-(4-aminophenyl)-6-methyl-, monosodium salt, mixt. with 2'-(4-aminophenyl)-6-methyl(2,6-bibenzothiazole)-7-sulfonic acid monosodium salt (2,6'-:2',6''-Terbenzothiazole)-7-sulfonic acid, 2''-(4-aminophenyl)-6-methyl-, monosodium salt, mixture with 2'-(4-aminophenyl)-6-methyl(2,6'-benzothiazole)-7-sulfonic acid, monosodium salt C.I. 49000 C.I. Direct Yellow 7, sodium salt Direct Yellow 59 NSC 72275 Primulinesulfonic acid Thioflavine S under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC21H36N3O3S3 Na
Molecular Weight497.71 g/mol
Purity97%+
StorageStore in a cool place (≤25°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)5.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1959
Nitrogen Atoms3
Sulfur Atoms3

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