Thiochrome

Name: Thiochrome
Brand: Vaqora Chemicals
SKU: VQ-032367

About Thiochrome

Listed under CAS 92-35-3, Thiochrome is an impurity of Thiamine available from Vaqora Chemicals. Formula C12H14N4OS, molecular weight 262.33 g/mol. Systematically, it is named 2-(6,12-dimethyl-4-thia-2,7,11,13-tetrazatricyclo[7.4.0.03,7]trideca-1(13),2,5,9,11-pentaen-5-yl)ethanol. Common synonyms include Thiachromine-8-ethanol, 2,7-dimethyl- and 5H-Thiachromine-8-ethanol, 2,7-dimethyl-.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

This Thiamine impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Thiamine

View every impurity, metabolite and intermediate we list for Thiamine.

Thiamine impurities

Specifications & identifiers

Chemical identifiers
Product name	Thiochrome
Catalogue No.	VQ-032367
CAS Number	92-35-3
IUPAC name	2-(6,12-dimethyl-4-thia-2,7,11,13-tetrazatricyclo[7.4.0.03,7]trideca-1(13),2,5,9,11-pentaen-5-yl)ethanol
Molecular formula	C₁₂H₁₄N₄OS
Molecular weight	262.33 g/mol
Exact mass	262.0888
Grade	Reference Standard
HSN code	38229090
InChIKey	GTQXMAIXVFLYKF-UHFFFAOYSA-N
SMILES	CC1=C(SC2=NC3=NC(=NC=C3CN12)C)CCO
PubChem CID	66706

Physical properties
Physical form	Solid
LogP (XLogP3)	0.6
H-bond donors / acceptors	1 / 5
TPSA	86.9 Å²
Synonyms	5H-Pyrimido(4,5-d)thiazolo(3,2-a)pyrimidine-8-ethanol, 2,7-dimethyl-, 5H-Pyrimido[4,5-d]thiazolo[3,2-a]pyrimidine-8-ethanol, 2,7-dimethyl-, Thiachromine-8-ethanol, 2,7-dimethyl-, 5H-Thiachromine-8-ethanol, 2,7-dimethyl-, 2-(2,7-Dimethyl-5H-thiazolo(3',2':1,2)pyrimido(4,5-d)pyrimidin-8-yl)ethanol, 2,7-dimethylthiochromine-8-ethanol, 2,7-Dimethylthiachromine-8-ethanol, 2-(2,7-Dimethyl-5H-pyrimido[4,5-d]thiazolo[3,2-a]pyrimidin-8-yl)ethan-1-ol, 2,7-Dimethyl-5H-thiachromine-8-ethanol, Thiachromine-8-ethanol,7-dimethyl-, 5H-Thiachromine-8-ethanol,7-dimethyl-, 2-(2,7-Dimethyl-5H-pyrimido[4,5-d][1,3]thiazolo[3,2-a]pyrimidin-8-yl)ethan-1-ol

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Thiochrome?

The CAS Registry Number of Thiochrome is 92-35-3. It is also known as 5H-Pyrimido(4,5-d)thiazolo(3,2-a)pyrimidine-8-ethanol, 2,7-dimethyl-, 5H-Pyrimido[4,5-d]thiazolo[3,2-a]pyrimidine-8-ethanol, 2,7-dimethyl-, Thiachromine-8-ethanol, 2,7-dimethyl-.

What is the molecular formula and molecular weight of Thiochrome?

Thiochrome has the molecular formula C12H14N4OS and a molecular weight of 262.33 g/mol. Its IUPAC name is 2-(6,12-dimethyl-4-thia-2,7,11,13-tetrazatricyclo[7.4.0.03,7]trideca-1(13),2,5,9,11-pentaen-5-yl)ethanol.

What is Thiochrome used for?

Thiochrome is supplied as a characterised reference material related to Thiamine. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Thiochrome can I order?

We supply Thiochrome in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Thiochrome?

Yes. Every lot of Thiochrome is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Thiochrome be shipped internationally?

Yes. Thiochrome is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.