2-Chlorobenzothiazole
- CAS NO.:615-20-3
- Empirical Formula: C7H4ClNS
- Molecular Weight: 169.63
- MDL number: MFCD00005776
- EINECS: 210-415-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-01-27 09:38:02

What is 2-Chlorobenzothiazole?
Chemical properties
CLEAR YELLOW TO YELLOW-BROWNISH LIQUID
The Uses of 2-Chlorobenzothiazole
2-Chlorobenzothiazole was used in the synthesis of:
- (RS)- and (S)-lubeluzole
- (1,3-benzothiazol-2-yl) amino-9-(10H)-acridinone derivatives
- 4H-thieno[2′,3′:4,5]pyrimido[2,1-b]benzothiazole derivatives
The Uses of 2-Chlorobenzothiazole
2-Chloro-1,3-benzothiazole is used in the synthesis of CBTs which are good building blocks for bioluminescent compounds for imaging.
Purification Methods
It is purified by fractional distillation in vacuo. The 2-chloro-3-methylbenzothiazolinium 2,4-dinitrobenzenesulfonate crystallises from Ac2O, m 162-163o(dec). [Young & Amstutz J Am Chem Soc 73 4773 1951, Brower et al. J Org Chem 19 1830 1954, Hunter & Jones J Chem Soc 2190 1930, Beilstein 27 H 44, 27 II 18, 27 III/IV 1072.]
Properties of 2-Chlorobenzothiazole
Melting point: | 21-23 °C (lit.) |
Boiling point: | 141 °C/30 mmHg (lit.) |
Density | 1.303 g/mL at 25 °C (lit.) |
refractive index | n |
Flash point: | >230 °F |
storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
solubility | Chloroform (Slightly), Methanol (Slightly) |
form | Liquid |
pka | -0.23±0.10(Predicted) |
Specific Gravity | 1.3711.303 |
color | Clear yellow to yellow-brownish |
Water Solubility | insoluble |
BRN | 116316 |
CAS DataBase Reference | 615-20-3(CAS DataBase Reference) |
NIST Chemistry Reference | Benzothiazole, 2-chloro-(615-20-3) |
EPA Substance Registry System | 2-Chlorobenzothiazole (615-20-3) |
Safety information for 2-Chlorobenzothiazole
Signal word | Warning |
Pictogram(s) |
![]() Skull and Crossbones Acute Toxicity GHS06 ![]() Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H301:Acute toxicity,oral H302:Acute toxicity,oral |
Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P321:Specific treatment (see … on this label). P405:Store locked up. P501:Dispose of contents/container to..… |
Computed Descriptors for 2-Chlorobenzothiazole
New Products
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