4-Hydroxy-2-mercapto-6-methylpyrimidine , 98% , 56-04-2

Synonym(s):
4-Hydroxy-2-mercapto 6-methylpyrimidine;Basethyrin;Methiocil;MZU;Thiothymin

CAS NO.：56-04-2

Empirical Formula: C5H6N2OS

Molecular Weight: 142.18

MDL number: MFCD00006040

EINECS: 200-252-3

PRODUCT Properties

• Melting point: ~330 °C (dec.)(lit.)
• Density: 1.291 (estimate)
• refractive index: 1.6430 (estimate)
• storage temp.: Keep in dark place,Sealed in dry,Room Temperature
• solubility: DMSO (Heated), Methanol (Slightly, Heated)
• pka: pKa 8.2 (Uncertain)
• form: Liquid
• color: Clear colorless to yellow
• Water Solubility: INSOLUBLE
• Merck: 14,6128
• BRN: 115648
• Stability: Incompatible with strong oxidizing agents, iodine, metals.
• InChI: 1S/C5H6N2OS/c1-3-2-4(8)7-5(9)6-3/h2H,1H3,(H2,6,7,8,9)
• InChIKey: HWGBHCRJGXAGEU-UHFFFAOYSA-N
• SMILES: CC1=CC(=O)NC(=S)N1
• CAS DataBase Reference: 56-04-2(CAS DataBase Reference)
• IARC: 2B (Vol. Sup 7, 79) 2001
• NIST Chemistry Reference: 6-Methyl-2-thiouracil(56-04-2)
• EPA Substance Registry System: Methylthiouracil (56-04-2)

Description and Uses

antithyroid agent

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H317
• Precautionary statements: P261-P272-P280-P302+P352-P333+P313-P362+P364
• PPE: Eyeshields, Gloves, type P3 (EN 143) respirator cartridges
• Hazard Codes: Xn,Xi
• Risk Statements: 22-40
• Safety Statements: 36/37-45
• RIDADR: UN 3077 9 / PGIII
• WGK Germany: 3
• RTECS: YR0875000
• Hazard Note: Irritant/Possible Carcinogen
• TSCA: TSCA listed
• HazardClass: 9
• HS Code: 29335995
• Storage Class: 11 - Combustible Solids
• Hazard Classifications: Skin Sens. 1
• Hazardous Substances Data: 56-04-2(Hazardous Substances Data)
• Toxicity: MLD in rabbits (mg/kg): 2486 orally (Simon)
• Limited Quantities: 5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid)
• Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)