Tungsten diselenide CAS 12067-46-8
| CAS No. | 12067-46-8 |
| Molecular Formula | Se2W |
| Molecular Weight | 341.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Tungsten diselenide (CAS 12067-46-8), molecular formula Se2W and molecular weight 341.76 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an inorganic composition, Tungsten diselenide is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 341.76 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | Se2W |
| Molecular Weight | 341.76 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Freely soluble in water |
| Stability | Stable under recommended storage conditions |
| CAS Registry Year (est.) | 1960 |
Related Tungsten Standards
- Tungsten(IV) chloride (CAS 13470-13-8)
- Zinc tungsten oxide, 99.9% (metals basis) (CAS 13597-56-3)
- Tungsten(V) dichloride triethoxide, 10% w/v in ethanol (CAS 45000-93-9)
- Tungsten(VI) chloride (CAS 13283-01-7)
- Tungsten dichloride (CAS 13520-76-8)
- Tungsten(IV) Sulfide (CAS 12138-09-9)
- Tungsten(IV) telluride(WTe2), 99.95% (CAS 12067-76-4)
- Tungsten(VI) oxide (CAS 1314-35-8)
Recommended Standards
- 6-(5-Amino-3-methyl-1H-pyrazol-1-yl)-1-(3-chlorophenyl)-1H,4H,5H-pyrazolo[3,4-d]pyrimidin-4-one (CAS 1172953-98-8)
- 2-Chloro-6-(6-cyclopropyl-8-fluoro-1-oxoisoquinolin-2(1H)-yl)benzaldehyde (CAS 1242156-54-2)
- 6-(5-Amino-3-methyl-1H-pyrazol-1-yl)-1-(4-chlorophenyl)-1H,4H,5H-pyrazolo[3,4-d]pyrimidin-4-one (CAS 1172872-30-8)
- 4-(4-Chloro-2-fluorobenzoyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid (CAS 1326812-21-8)
- tert-Butyl (4-aminothiophen-3-yl)carbamate (CAS 194350-10-2)
- (3-Amino-4-methoxyphenyl)(4-isopropylphenyl)methanone (CAS 1176617-23-4)
- (S)-2-Methyl-1-phenylpropan-1-ol (CAS 34857-28-8)
- (r)-4-(1-Aminoethyl)-2-bromophenol (CAS 1213957-83-5)
- Ethyl 1-Carbamoylpiperidine-4-carboxylate (CAS 1092289-81-0)
- 2,8-Dimethyl-5-[2-(6-methyl-3-pyridinyl)ethyl]-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole dihydrochloride hydrate 97657-92-6 Dimebolin dihydrochloride hydrate Dimeboline dihydrochloride hydrate Dimebon dihydrochloride hydrate Dimebone dihydrochloride hydrate MFCD17215933 (CAS 97657-92-6)
- Methyl 1-Boc-4-[[(R)-1-phenylethyl]amino]piperidine-3-carboxylate (CAS 503167-62-2)
- 4-(Butan-2-yl)benzene-1-thiol (CAS 2396-70-5)
- (Hydroxymethyl)urea (CAS 1000-82-4)
- Tirzepatide Impurity 46 (CAS CATO-C4X-324046)
Why CATO?
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