1121-31-9

1121-31-9 structure

Name: Pyrithione
Chemical Name: pyridine-2-thiol N-oxide
CAS Number: 1121-31-9
Molecular Formula: C₅H₅NOS
Molecular Weight: 127.164
Catalog: Pharmaceutical intermediate Heterocyclic compound Pyridine compound Pyridine derivative
Create Date: 2018-05-14 08:00:00
Modify Date: 2025-08-25 10:00:49

Name	pyridine-2-thiol N-oxide
Synonyms	2-mercaptopyridine-N-oxide pyridine-2-thiol N-oxide MercaptopyridineNoxide PYRITHIONE N-Hydroxy-2-thiopyridone 2-mercaptopyridine-1-oxide 2-pyridinethiol-1-oxide 2-thiopyridine-N-oxide 2-Mercapto pyridine oxide 2-Pyridinethiol 1-oxide PYRIDINETHIOLOXIDE Omadine Pyridine-2-thiol 1-oxide PYRIDINE-2-THIOL-1-OXIDE 1-Hydroxy-2-pyridinethione EINECS 214-329-4 2-mercaptopyridine 1-oxide pyridine-N-oxide-2-thiophenol MFCD00006196 2-mercapto-pyridine N-oxide 2-mercaptopyridine n-oxide 2-Pyridinethiol, 1-oxide 2-Pyridinethiol N-oxide

Density	1.3±0.1 g/cm3
Boiling Point	350.2±15.0 °C at 760 mmHg
Melting Point	70-72 °C
Molecular Formula	C₅H₅NOS
Molecular Weight	127.164
Flash Point	165.6±20.4 °C
Exact Mass	127.009186
PSA	64.26000
LogP	-0.90
Vapour Pressure	0.0±0.7 mmHg at 25°C
Index of Refraction	1.614
Storage condition	Refrigerator
Stability	Stable. Incompatible with strong bases, strong oxidizing agents.

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot, POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960- Volume(issue)/page/year: 48,371,1976

Symbol	GHS06
Signal Word	Danger
Hazard Statements	H301-H315-H319-H335
Precautionary Statements	P261-P301 + P310-P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Faceshields;Gloves
Hazard Codes	Xi:Irritant;
Risk Phrases	R22;R36/37/38
Safety Phrases	S26-S36-S24/25
RIDADR	2811
WGK Germany	3
RTECS	UT8999000
HS Code	2933399090

2402-95-1

~93%

1121-31-9

Literature: Zhong, Ping; Guo, Sheng-Rong; Song, Cai-Sheng Synthetic Communications, 2004 , vol. 34, # 2 p. 247 - 253

71-23-8

20295-64-1

1121-31-9

Literature: US4080329 A1, ;

109-09-1

1121-31-9

Literature: Synthetic Communications, , vol. 34, # 2 p. 247 - 253

HS Code	2933399090
Summary	2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%