Thifensulfuron Methyl

Description

Thifensulfuron Methyl · CAS 79277-27-3 · C12H13N5O6S2. UNII 5VFH25ES6F. Melting Point: 186 °C; Solubility: In water, 2.24X10+3 mg/L at 25 °C; Density: 1.580 g/cu cm.

Identification

CAS Registry Number	79277-27-3
PubChem CID	73674
Molecular formula	C12H13N5O6S2
IUPAC name	methyl 3-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoylsulfamoyl]thiophene-2-carboxylate
UNII (FDA)	5VFH25ES6F

Computed Descriptors

Molecular Weight	387.4
XLogP3	1.6
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	10
Rotatable Bond Count	6
Exact Mass	387.03072550
Monoisotopic Mass	387.03072550
Topological Polar Surface Area	186
Heavy Atom Count	25
Formal Charge	0

Physical & Chemical Properties

Melting Point	186 °C
Solubility	In water, 2.24X10+3 mg/L at 25 °C
Density	1.580 g/cu cm
Vapor Pressure	1.28X10-10 mm Hg at 25 °C
LogP	log Kow = -1.56
LogP	1.52
Dissociation Constants	pKa = 4.0 at 25 °C

Physical description & handling notes

• White solid; [Merck Index] Off-white odorless solid; [HSDB]
• Off-white solid
• Odorless
• Aqueous hydrolysis DT50 4-6 days (pH 5), 180 days (pH 7), 90 days (pH 9).
• Discontinued products: Crackshot. Mixtures: DP 928 (+metsulfuron-methyl); DUK 110 (+tribenuron-methyl).
• Formulations: Dry flowable.

GHS Hazard Classification

Reported hazard statements	H400, H410, H316

Documented Uses

• Used as post-emergence herbicide for control of broad-leaved weeds in food crops; [Merck Index]
• Sulfonylurea herbicide for postemergence broadleaf weed control in food crops.
• Herbicide /for/ postemergence weed control in soybeans.
• Thifensulfuron-methyl is produced by reaction of 2-(methoxycarbonyl)-3-thiophenesulfonyl isocyanate with 2-amino-4,6-dimethoxypyrimidine.
• Treated cereals may experience a temporary inhibition of growth and color changes in the leaves, but these have no ultimate effect on the yield.
• In mammals, following oral administration of thifensulfuron-methyl, 70-75% of the unchanged material is excreted in the urine and feces.

Synonyms

Thifensulfuron-methyl; 79277-27-3; Thifensulfuron methyl; Thiameturon-methyl; Pinnacle; methyl 3-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoylsulfamoyl]thiophene-2-carboxylate; Thifensulfuron methyl ester; DTXSID1024124; INM 6316; 5VFH25ES6F; DTXCID804124; CHEBI:83453; methyl 3-((4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoylsulfamoyl)thiophene-2-carboxylate; RefChem:189394; Harmony; Refine

Frequently Asked Questions

What are the CAS number and molecular formula of Thifensulfuron Methyl?

CAS 79277-27-3; molecular formula C12H13N5O6S2; molecular weight — g/mol.

What other names is Thifensulfuron Methyl known by?

Thifensulfuron-methyl, 79277-27-3, Thifensulfuron methyl, Thiameturon-methyl, Pinnacle, methyl 3-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoylsulfamoyl]thiophene-2-carboxylate.

Is Thifensulfuron Methyl classified as hazardous?

Hazard statements reported: H400, H410, H316.

What are the key physical properties of Thifensulfuron Methyl?

Melting Point: 186 °C; Solubility: In water, 2.24X10+3 mg/L at 25 °C; Density: 1.580 g/cu cm; Vapor Pressure: 1.28X10-10 mm Hg at 25 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.