Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: thiothymine
Price: ￥1308.0/50g ￥428.0/10g
Purity: 98.0%
Stocking Period: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4-Hydroxy-5-methyl-2-mercaptopyrimidine
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

636-26-0

636-26-0 structure

Name: thiothymine
Chemical Name: 4-Hydroxy-5-Methyl-2-Mercaptopyrimidine
CAS Number: 636-26-0
Molecular Formula: C₅H₆N₂OS
Molecular Weight: 142.179
Catalog: Pharmaceutical intermediate Heterocyclic compound Pyrimidine compound Methyl pyrimidine
Create Date: 2019-01-12 20:10:47
Modify Date: 2025-08-21 16:34:54

Name	4-Hydroxy-5-Methyl-2-Mercaptopyrimidine
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

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.

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

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

4401-71-2

~76%

636-26-0

Literature: Gu, Shuang-Xi; Yang, Shi-Qiong; He, Qiu-Qin; Ma, Xiao-Dong; Chen, Fen-Er; Dai, Hui-Fang; Clercq, Erik De; Balzarini, Jan; Pannecouque, Christophe Bioorganic and Medicinal Chemistry, 2011 , vol. 19, # 23 p. 7093 - 7099

36056-90-3

17356-08-0

~48%

636-26-0

Literature: Coffen; Schaer; Bizzarro; Cheung Journal of Organic Chemistry, 1984 , vol. 49, # 2 p. 296 - 300

54843-13-9

17356-08-0

636-26-0

Literature: Archiv der Pharmazie, , vol. 317, # 5 p. 425 - 430

17356-08-0

636-26-0

Literature: American Chemical Journal, , vol. 43, p. 32

Precursor 3
4401-71-2 36056-90-3 54843-13-9
DownStream 8
20651-30-3 18588-37-9 65-71-4 17758-52-0
28585-51-5 13480-95-0 22433-68-7 61044-96-0

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%

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