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Bensulfuron methyl

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Bensulfuron methyl Basic information

Product Name:
Bensulfuron methyl
CAS:
83055-99-6
MF:
C16H18N4O7S
MW:
410.4
EINECS:
401-340-6
Mol File:
83055-99-6.mol
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Bensulfuron methyl Chemical Properties

Melting point:
185-188°C
Density 
1.4087 (rough estimate)
refractive index 
1.6000 (estimate)
storage temp. 
0-6°C
pka
12.34±0.70(Predicted)
form 
neat
BRN 
7447488
InChIKey
XMQFTWRPUQYINF-UHFFFAOYSA-N
CAS DataBase Reference
83055-99-6
EPA Substance Registry System
Bensulfuron-methyl (83055-99-6)
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Safety Information

Hazard Codes 
Xi;N,N,Xi
Risk Statements 
43-51/53
Safety Statements 
2-24-37-61
RIDADR 
UN 3077 9/PG 3
WGK Germany 
2
RTECS 
DG8733000
HS Code 
29350090
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Bensulfuron methyl Usage And Synthesis

Uses

Herbicide.

Definition

ChEBI: The methyl ester of bensulfuron. An acetolactate synthase inhibitor, it is used as a herbicide for the control of a variety of both annual and perennial weeds in crops, particularly wheat and rice. It is not licensed for use within the UK.

Metabolic pathway

Bensulfuron methyl is metabolized by mammals and birds and the major metabolites identified include mono-O-demethylated and 5-hydroxylated bensulfuron methyl and 5-hydroxy-2-amino-3,5- dimethoxypyrimidine. As bird metabolites, cleavage of the pyrimidine ring of bensulfuron methyl is observed which results in two pyrimidine ring-opening metabolites. In rice plants, bensulfuron methyl undergoes rapid O-demethylation at one of the methoxy groups on the pyrimidine ring which will proceed through hydroxylation at the methyl group. Alcoholysis and hydrolysis of bensulfuron methyl (H1) involve mainly the breakdown of the urea moiety which leads to several degradation products, some of which are also identified as metabolites in mammals and plants.

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