thiothymine

Modify Date: 2024-01-02 20:58:01

thiothymine Structure
thiothymine structure
 Common Name thiothymine
CAS Number 636-26-0 Molecular Weight 142.179
Density 1.4±0.1 g/cm3 Boiling Point 329.7ºC at 760 mmHg
Molecular Formula C5H6N2OS Melting Point 283-286°C
MSDS N/A Flash Point 153.2ºC

 Names

Name 4-Hydroxy-5-Methyl-2-Mercaptopyrimidine
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.4±0.1 g/cm3
Boiling Point 329.7ºC at 760 mmHg
Melting Point 283-286°C
Molecular Formula C5H6N2OS
Molecular Weight 142.179
Flash Point 153.2ºC
Exact Mass 142.020081
PSA 80.74000
LogP 0.31
Index of Refraction 1.638
Stability Stable but may be heat or light sensitive. Incompatible with strong oxidizing agents.

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
XP2108500
CHEMICAL NAME :
Thymine, 2-thio-
CAS REGISTRY NUMBER :
636-26-0
LAST UPDATED :
199701
DATA ITEMS CITED :
3
MOLECULAR FORMULA :
C5-H6-N2-O-S
MOLECULAR WEIGHT :
142.19

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams & Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10- Volume(issue)/page/year: 97,478,1949
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
100 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams & Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10- Volume(issue)/page/year: 97,478,1949

 Safety Information

Hazard Codes Xi
Risk Phrases R22;R40
Safety Phrases S22-S36/37
RTECS XP2108500
HS Code 2933599090

 Customs

HS Code 2933599090
Summary 2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

5-Methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one
MFCD00009777
5-Methyl-2-sulfanylpyrimidin-4-ol
5-Methyl-2-thioxo-2,3-dihydro-4(1H)-pyrimidinone
4(1H)-Pyrimidinone, 2,3-dihydro-5-methyl-2-thioxo-
thiothymine
5-methyl-2-sulfanylidene-1H-pyrimidin-4-one
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