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Pyrazophos

Pyrazophos structure

CAS No:
13457-18-6
Formula:
C14H20N3O5PS
Chemical Name:
Pyrazophos
Synonyms:
Pyrazolo[1,5-a]pyrimidine-6-carboxylic acid,2-[(diethoxyphosphinothioyl)oxy]-5-methyl-,ethyl ester;Pyrazolo[1,5-a]pyrimidine-6-carboxylic acid,2-hydroxy-5-methyl-,ethyl ester,O-ester with O,O-diethyl phosphorothioate;Afugan;Diethyl 6-carbethoxy-5-methylpyrazolo[1,5-a]pyrimidin-2-yl phosphorothioate;HOE 2873;Hoechst 2873;2-(O,O-Diethylthionophosphoryl)-5-methyl-6-carbethoxypyrazolopyrimidine;Pyrazophos;Curamil;Missile;Afugan WP 30;NSC 232671;52329-56-3;1135443-41-2
Categories:
Agrochemicals > Fungicides

Description

ChEBI: A member of the class of pyrazolopyrimidines that is the ethyl ester of 2-[(diethoxyphosphorothioyl)oxy]-5-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid. A fungicide used to control Erysiphe, Helminthosporium and ital>Rhynchospium in cereals.

Pyrazophos is a member of the class of pyrazolopyrimidines that is the ethyl ester of 2-[(diethoxyphosphorothioyl)oxy]-5-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid. A profungicide (by hydrolysis of the thionophosphate group to afford the corresponding 2-hydroxypyrazolopyrimidine fungicide), it is used to control Erysiphe, Helminthosporium and Rhynchospium in cereals. It has a role as a phospholipid biosynthesis inhibitor, an insecticide, an antifungal agrochemical and a profungicide. It is a pyrazolopyrimidine, an organic thiophosphate and an ethyl ester. It derives from an ethyl 2-hydroxy-5-methylpyrazolo[1,5-a]pyrimidine-6-carboxylate.

Pyrazophos Basic Attributes

Molecular Weight：

373.36

Exact Mass：

373.36

EC Number：

236-656-1

UNII：

BEG0A8I17D

NSC Number：

232671

DSSTox ID：

DTXSID7042352

Characteristics

PSA：

116

XLogP3：

3.01

Density：

1.38±0.1 g/cm3(Predicted)

Melting Point：

51 °C

Refractive Index：

1.596

Water Solubility：

1.12e-05 M

Storage Conditions：

APPROX 4°C

Vapor Pressure：

2.2 x 10 -4 Pa (50 °C)

Toxicity：

Oral-rat LD50: 218 mg/kg

Flammability characteristics：

Decompose toxic phosphorus oxide, sulfur oxide, nitrogen oxide gas by heating

Safety Information

Packing level：

III

Hazard category：

6.1(b)

Transport codes：

2783

wgk germany：

hazard class code：

20/22-50/53

safety instructions：

36/37-46-60-61

RTECS Number：

TF2035000

Marks：

Xn,N

Storage features：

The warehouse is ventilated, low temperature and dry; stored and transported separately from food materials

Precautionary statement(s)：

P273-P301 + P310-P501

Hazard Statements：

H301-H332-H410

GHS Classification：

|Warning|H302: Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P271, P273, P301+P312, P304+P312, P304+P340, P312, P330, P391, and P501|Danger|H301 (92.68%): Toxic if swallowed [Danger Acute toxicity, oral]|P261, P264, P270, P271, P273, P301+P310, P304+P312, P304+P340, P312, P321, P330, P391, P405, and P501|Aggregated GHS information provided by 41 companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H301: Toxic if swallowed [Danger Acute toxicity, oral]|P260, P264, P270, P301+P310, P305+P351+P338, P307+P311, P321, P330, P337+P313, P405, and P501

Toxicity

Toxicity class：

most toxic

Drug Information

MeSH Entry Terms：

pyrazophos

Pyrazophos Use and Manufacturing

Uses

Fungicide.

Use Classification：

Agrochemicals -> Fungicides

Computed Properties

Molecular Weight:373.37
XLogP3:3.1
Hydrogen Bond Acceptor Count:8
Rotatable Bond Count:9
Exact Mass:373.08612892
Monoisotopic Mass:373.08612892
Topological Polar Surface Area:116
Heavy Atom Count:24
Complexity:473
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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Pyrazophos

CAS No.: 13457-18-6

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CAS No.: 13457-18-6

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