5-Methyl-3-isoxazolyl isothiocyanate
Also known as: 3-Isothiocyanato-5-methylisoxazole, 3-Isothiocyanato-5-methyl-1,2-oxazole, Isoxazole, 3-isothiocyanato-5-methyl- (9CI), 5-methylisoxazolyl-3-isothiocyanate
5-Methyl-3-isoxazolyl isothiocyanate (CAS 321309-33-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H4N2OS and a molecular weight of 140.16300 g/mol. Key properties include a boiling point of 284.5ºC at 760mmHg, a density of 1.29g/cm3 and a flash point of 125.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 321309-33-5
- Jingsj CID
- J-1146308-4
- Molecular Formula
- C5H4N2OS
- Molecular Weight
- 140.16300 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 284.5ºC at 760mmHg |
|---|---|
| Density | 1.29g/cm3 |
| Flash Point | 125.9ºC |
| Exact Mass | 140.00400 |
| PSA | 70.48000 |
| LogP | 1.71730 |
| Refractive Index | 1.614 |
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 5-Methyl-3-isoxazolyl isothiocyanate?
The CAS number of 5-Methyl-3-isoxazolyl isothiocyanate is 321309-33-5.
What are the molecular formula and molecular weight of 5-Methyl-3-isoxazolyl isothiocyanate?
5-Methyl-3-isoxazolyl isothiocyanate has molecular formula C5H4N2OS and molecular weight 140.16300 g/mol.
What are the upstream and downstream products of 5-Methyl-3-isoxazolyl isothiocyanate?
For 5-Methyl-3-isoxazolyl isothiocyanate, Upstream Products: 3-Amino-5-methylisoxazole, Thiophosgene; Downstream Products: 1-[5-(phenylamino)-1,2,4-thiadiazol-3-yl]propan-2-one.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Methyl-3-isoxazolyl isothiocyanate (CAS 321309-33-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1146308-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.