4-Hydroxy-5-methyl-2-mercaptopyrimidine

CAS No.：636-26-0

Important Notice

This product is a chemical product/pharmaceutical intermediate. It is not a drug, an active pharmaceutical ingredient (API), or a pharmaceutical-grade material. It has not been granted a drug approval number or a Chemical Drug Substance Approval Notice, has not passed drug-related review and approval, and is not manufactured, tested, or released in accordance with pharmaceutical GMP.
This product is intended solely for non-clinical research, process development, quality studies, further chemical processing, or chemical synthesis. It must not be used in drug-product manufacturing, clinical trials, clinical diagnosis, or administration to humans or animals, or be sold, used as an input, submitted for regulatory filing, or released as an API or pharmaceutical material.
The purchaser must not use this product, or supply it to another party, for personal consumption, sports or fitness, weight loss, health supplements, food, or animal feed.

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4-Hydroxy-5-methyl-2-mercaptopyrimidine Basic information

Product Name:	4-Hydroxy-5-methyl-2-mercaptopyrimidine
Synonyms:	2,3-dihydro-5-methyl-2-thioxo-4(1h)-pyrimidinon;2-Mercapto-5-MethylpyriMidin-4-ol;5-methyl-2-sulfanylidene-1H-pyrimidin-4-one;2,3-dihydro-5-methyl-2-thioxo-4(1h)-pyrimidinone;2-thio-thymin;2-Thiothymine;5-Methyl-2-thioxo-2,3-dihydro-4(1H)-pyrimidinone;Thiothymine
CAS:	636-26-0
MF:	C5H6N2OS
MW:	142.18
EINECS:
Product Categories:	PYRIMIDINE;Pyridines, Pyrimidines, Purines and Pteredines
Mol File:	636-26-0.mol

4-Hydroxy-5-methyl-2-mercaptopyrimidine Chemical Properties

Melting point	283-286°C
density	1.36
refractive index	1.6430 (estimate)
storage temp.	Sealed in dry,Room Temperature
form	powder to crystal
pka	pKa 7.71 (Uncertain)
color	White to Almost white
Water Solubility	509mg/L(25 ºC)
BRN	120488
Stability:	Stable but may be heat or light sensitive. Incompatible with strong oxidizing agents.
CAS DataBase Reference	636-26-0(CAS DataBase Reference)
NIST Chemistry Reference	4(1H)-pyrimidinone, 2,3-dihydro-5-methyl-2-thioxo-(636-26-0)
EPA Substance Registry System	5-Methyl-2-thiouracil (636-26-0)

Safety Information

Hazard Codes	Xi
Risk Statements	22-40-36/37/38
Safety Statements	22-36/37-26
RTECS	XP2108500
HS Code	2933599590

MSDS Information

Provider	Language
ALFA	English

4-Hydroxy-5-methyl-2-mercaptopyrimidine Usage And Synthesis

Chemical Properties	white crystalline powder
General Description	White crystalline solid.
Air & Water Reactions	Insoluble in water.
Reactivity Profile	4-Hydroxy-5-methyl-2-mercaptopyrimidine is heat sensitive and may be light sensitive.
Fire Hazard	Flash point data for 4-Hydroxy-5-methyl-2-mercaptopyrimidine are not available. 4-Hydroxy-5-methyl-2-mercaptopyrimidine is probably combustible.

4-Hydroxy-5-methyl-2-mercaptopyrimidine Preparation Products And Raw materials

Raw materials	Ethanol-->Hydrochloric acid-->Methanol-->Diethyl ether-->Acetic acid-->Sodium-->Toluene-->Sodium sulfate-->Acetone-->Sodium bicarbonate-->Triethyl orthoformate-->Thiourea-->ZINC-->Iodine-->Ethyl 2-bromopropionate
Preparation Products	Thymine

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