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Dayang Chem (Hangzhou) Co., Ltd.
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Product Name: 3-Methylpyrazole
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1453-58-3

1453-58-3 structure

1453-58-3 structure

Name: 3-Methylpyrazole
Chemical Name: 3-Methylpyrazole
CAS Number: 1453-58-3
Molecular Formula: C₄H₆N₂
Molecular Weight: 82.104
Catalog: Pharmaceutical intermediate API intermediate
Create Date: 2018-04-26 08:00:00
Modify Date: 2026-07-22 10:57:28
3-Methylpyrazole is used as a nitrification inhibitor of nitrification in soil[1].

Name	3-Methylpyrazole
Synonyms	4-Methyl-1H-Pyrazole 2-Methylpyrazole Pyrazole, 5-methyl 3-Methyl-1H-pyrazole 3-methyl-pyrazole 3-Methylpyrazo methyl pyrazol- 3-Methyl-1,2-diazole 3-Methylpyrazole, R Pyrazole,5-methyl Pyrazole,3-methyl pyrazolylmethane 5-methyl-pyrazol 3-METHYL-1,2-DIAZOLE 3-METHYL-1H-PYRAZOLE Pyrazole, 3-methyl Pyrazole, 3(or 5)-methyl InChI=1/C4H6N2/c--4/-3H,1H3,(H,5,6 1H-Pyrazole, 3-methyl EINECS 215-925-7 5-Methylpyrazole 3-METHYLPYRAZOLE 3-Methylpyrazole> 3-(5)-methylpyrazole 3-methyl-pyrazol MFCD00005240 3-Methyl-1H-phrazole T-CHEM-BB B022230 3-Methyl-1H-pyrzole

Description	3-Methylpyrazole is used as a nitrification inhibitor of nitrification in soil[1].
Related Catalog	Signaling Pathways >> Others >> Others Research Areas >> Metabolic Disease
In Vitro	3-Methylpyrazole could inhibit the metabolism of MAM by rat liver microsomes[2].
References	[1]. G.W. McCarty, et al. Inhibition of nitrification in soil by heterocyclic nitrogen compounds. Biol Fertil Soils (1989) 8:204-211. [2]. Fiala ES, et al. Differential effects of 4-iodopyrazole and 3-methylpyrazole on the metabolic activation of methylazoxymethanol to a DNA methylating species by rat liver and rat colon mucosa in vivo. J Cancer Res Clin Oncol. 1987;113(2):145-50.

Density	1.1±0.1 g/cm3
Boiling Point	204.0±0.0 °C at 760 mmHg
Melting Point	36 - 37ºC
Molecular Formula	C₄H₆N₂
Molecular Weight	82.104
Flash Point	87.4±11.7 °C
Exact Mass	82.053101
PSA	28.68000
LogP	0.78
Vapour Pressure	0.4±0.3 mmHg at 25°C
Index of Refraction	1.523
Storage condition	Refrigerator
Water Solubility	miscible

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UQ7340000

CHEMICAL NAME :: Pyrazole, 3-methyl-

CAS REGISTRY NUMBER :: 1453-58-3

BEILSTEIN REFERENCE NO. :: 0001454

LAST UPDATED :: 199710

DATA ITEMS CITED :: 5

MOLECULAR FORMULA :: C4-H6-N2

MOLECULAR WEIGHT :: 82.12

WISWESSER LINE NOTATION :: T5MNJ C1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 710 mg/kg

TOXIC EFFECTS :: Autonomic Nervous System - other (direct) parasympathomimetic Behavioral - somnolence (general depressed activity) Cardiac - other changes

REFERENCE :: GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 32(9),50,1988

TYPE OF TEST :: LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 719 mg/m3

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 32(9),50,1988

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 240 mg/kg

TOXIC EFFECTS :: Peripheral Nerve and Sensation - spastic paralysis with or without sensory change Behavioral - excitement Behavioral - ataxia

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 51(6),29,1986

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 900 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: FATOAO Farmakologiya i Toksikologiya (Moscow). For English translation, see PHTXA6 and RPTOAN. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.2- 1939- Volume(issue)/page/year: 25,27,1962

Symbol	GHS05, GHS07, GHS08
Signal Word	Danger
Hazard Statements	H302-H314-H361
Precautionary Statements	P201-P280-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338-P308 + P313
Personal Protective Equipment	Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes	Xn:Harmful
Risk Phrases	R22;R36/37/38
Safety Phrases	S26-S36-S24/25
RIDADR	2810
WGK Germany	3
RTECS	UQ7340000
Packaging Group	III
Hazard Class	6.1(b)
HS Code	29331990

Precursor 7
107-06-2 5436-21-5 460-12-8 821-10-3
1568-20-3 91272-98-9 74-88-4
DownStream 10
936250-20-3 186551-70-2 27301-77-5 873-50-7
5334-39-4 694-48-4 694-31-5 1128-54-7
6831-91-0 5334-40-7

HS Code	2933199090
Summary	2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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