What evidence should be supplied to confirm Trichosiderin B CAS 35394-49-1?

The letter B is part of the compound identity, not a commercial grade. Specify the full name, CAS number, intended reference-standard use, assay basis, HPLC or LC-MS identity evidence, related trichochromes or positional isomers, residual solvents, water and pack size. A generic pheomelanin pigment should not be accepted as equivalent.

Trichosiderin B CAS 35394-49-1

Trichosiderin B , CAS 35394-49-1 , is a defined sulfur-containing pheomelanin-related compound with molecular formula C23H20N4O9S2 and molecular weight 560.6 g/mol. It is a specialized research or analytical material, not a bulk industrial pigment. Procurement should focus on structural identity, LC-MS and chromatographic evidence, assay basis, related trichochromes or positional isomers, residual solvent, water, storage history and amount available. Milligram or research-scale packaging is more appropriate than a generic drum specification.

CAS: 35394-49-1
Synonyms: Trichosiderin B, Trichochrome B, Pheomelanin-related research marker
Molecular Formula: C₂₃H₂₀N₄O₉S₂
Grade: Confirm identity by an appropriate analytical method, assay basis, related substances, residual solvents and storage requirements against the current COA; buyer qualification is required.
Package: State required quantity and destination; confirm the current container, light or moisture protection, net weight, storage conditions and transport requirements against the current COA and SDS.

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Product Description

1 Identity and physicochemical profile

2 Applications and grade selection

3 Storage and handling

4 Safety, documentation and procurement

Identity and physicochemical profile

Item	Technical guidance
Product identity	Trichosiderin B; trichochrome B
CAS number	35394-49-1
Formula / molecular weight	C₂₃H₂₀N₄O₉S₂ / 560.6 g/mol
Use boundary	Specialized pheomelanin research or analytical material, not a bulk industrial pigment
Key purchase controls	Structural identity, LC-MS, chromatographic purity, assay basis, related trichochromes, water, residual solvent, storage history and available quantity

Applications and grade selection

Trichosiderin B may be evaluated as a research standard or marker in pheomelanin-related analytical work. Method suitability, reference assignment and sample traceability are more important than a generic industrial purity claim.

Request structural and mass-spectrometric evidence together with the chromatographic method.
Confirm whether purity is area percent, mass fraction or another assay basis.
Check related-compound resolution, available quantity, storage history and reanalysis support.

Storage and handling

Keep sealed, dry and protected from light under the conditions stated for the exact research material. Limit opening, use clean micro-sampling tools and record freeze-thaw or temperature history where relevant.

Safety, documentation and procurement

Handle as a research chemical with suitable containment and personal protection. Procurement should define analytical purpose, required evidence, quantity, packaging, destination and documentation before quotation.

FAQ - Technical & Supply Chain

Q:
What evidence should be supplied to confirm Trichosiderin B CAS 35394-49-1?

A: The letter B is part of the compound identity, not a commercial grade. Specify the full name, CAS number, intended reference-standard use, assay basis, HPLC or LC-MS identity evidence, related trichochromes or positional isomers, residual solvents, water and pack size. A generic pheomelanin pigment should not be accepted as equivalent.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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