5-Phenylisothiazole

Also known as: 5-Phenyl-1,2-thiazole, 5-Phenylisothiazol, 5-phenyl-1,2-thiazol, Isothiazole,5-phenyl, NSC 102320

5-Phenylisothiazole (CAS 1075-21-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7NS and a molecular weight of 161.22400 g/mol. Key properties include a boiling point of 201.9ºC at 760 mmHg, a density of 1.173 g/cm3 and a flash point of 71.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1075-21-4
Jingsj CID: J-1447783-9
Molecular Formula: C₉H₇NS
Molecular Weight: 161.22400 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	201.9ºC at 760 mmHg
Density	1.173 g/cm3
Flash Point	71.9ºC
Exact Mass	161.03000
PSA	41.13000
LogP	2.81010

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-Phenylisothiazole?

The CAS number of 5-Phenylisothiazole is 1075-21-4.

What are the molecular formula and molecular weight of 5-Phenylisothiazole?

5-Phenylisothiazole has molecular formula C9H7NS and molecular weight 161.22400 g/mol.

What are the upstream and downstream products of 5-Phenylisothiazole?

For 5-Phenylisothiazole, Upstream Products: (Z)-3-chloro-3-phenylprop-2-enal, 3-(Dimethylamino)-1-phenyl-2-propen-1-one, Acetophenone; Downstream Products: 5-Phenylthiazole, 4-phenyl-1,3-thiazole.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "5-Phenylisothiazole (CAS 1075-21-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1447783-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.