Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Pyrrole-1-propionic Acid
Price: Check
Purity: 95.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4-Chloroacetoacetic acid methyl ester
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: Pyrrole-1-propionic Acid
Price: ￥Inquiry/25kg
Purity: 99.0%
Stocking Period: Inquiry
Contact: Wang Jie
Email: 3096638339@qq.com

32807-28-6

32807-28-6 structure

32807-28-6 structure

Name: Pyrrole-1-propionic Acid
Chemical Name: methyl 4-chloro-3-oxobutanoate
CAS Number: 32807-28-6
Molecular Formula: C₅H₇ClO₃
Molecular Weight: 139.152
Catalog: Chemical reagent Organic reagent Ester Methyl ester compound
Create Date: 2018-03-12 08:00:00
Modify Date: 2025-08-21 10:22:29

Name	methyl 4-chloro-3-oxobutanoate
Synonyms	methyl 4-chloro-3-oxo-butanoate Pyrrole-1-propionic Acid 4-chloroacetoacetic acid methyl ester Methyl 4-chloro-3-oxobutanoate methyl 2-chloroacetoacetate EINECS 251-230-5 MFCD00000938 3-(1H-Pyrrol-1-yl)propanoic acid Methyl 4-chloroacetoacetate 1H-Pyrrole-1-propanoic acid ACETOACETIC ACID,4-CHLORO-,METHYL ESTER N-(2-carboxyethyl)pyrrole 4-Chloro-3-oxobutanoic acid methyl ester methyl 4-chloro-3-oxo-butyrate Butanoic acid,4-chloro-3-oxo-,methyl ester

Density	1.1±0.1 g/cm3
Boiling Point	287.8±23.0 °C at 760 mmHg
Melting Point	14-16 °C
Molecular Formula	C₅H₇ClO₃
Molecular Weight	139.152
Flash Point	127.9±22.6 °C
Exact Mass	139.063324
PSA	43.37000
LogP	0.86
Vapour Pressure	0.0±0.6 mmHg at 25°C
Index of Refraction	1.534
Water Solubility	71 g/L (20 ºC)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: AK5115000

CHEMICAL NAME :: Acetoacetic acid, 4-chloro-, methyl ester

CAS REGISTRY NUMBER :: 32807-28-6

BEILSTEIN REFERENCE NO. :: 1759939

LAST UPDATED :: 199701

DATA ITEMS CITED :: 3

MOLECULAR FORMULA :: C5-H7-Cl-O3

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 77 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - convulsions or effect on seizure threshold Lungs, Thorax, or Respiration - respiratory depression

REFERENCE :: OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 33,695,1987

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 91 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - convulsions or effect on seizure threshold Lungs, Thorax, or Respiration - respiratory depression

REFERENCE :: OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 33,695,1987

Symbol	GHS06
Signal Word	Danger
Hazard Statements	H301
Precautionary Statements	P301 + P310
Hazard Codes	T:Toxic;
Risk Phrases	R25;R34
Safety Phrases	S26-S36/37/39-S45
RIDADR	UN 2810 6.1/PG 2
WGK Germany	3
RTECS	AK5115000
Packaging Group	III
Hazard Class	8
HS Code	2918300090

Precursor 4
84200-22-6 67-56-1 41295-64-1 96-34-4
DownStream 10
41051-15-4 19040-71-2 215531-00-3 5978-70-1
88496-70-2 1445-91-6 86728-93-0 6169-06-8
58917-26-3 1517-70-0

HS Code	2918300090
Summary	2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

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