Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Chromocarb
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: Chromocarb
Price: ￥468.0/5g ￥1748.0/25g
Purity: 97.0%
Stocking Period: 2 Day
Contact: Liu jia
Email: 2130147988@qq.com

DC Chemicals Limited
China
Product Name: Chromocarb
Price: $Inquiry/100mg $Inquiry/250mg $Inquiry/500mg
Purity: 98.0%
Stocking Period: 3 Day
Contact: Tony Cao
Email: sales@dcchemicals.com

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

4940-39-0

4940-39-0 structure

4940-39-0 structure

Name: Chromocarb
Chemical Name: 4-Oxo-4H-1-benzopyran-2-carboxylic acid
CAS Number: 4940-39-0
Molecular Formula: C₁₀H₆O₄
Molecular Weight: 190.152
Catalog: Pharmaceutical intermediate Heterocyclic compound Pyran compound
Create Date: 2018-08-22 18:49:13
Modify Date: 2025-08-25 12:33:10
Chromocarb is a synthetic vasoprotectant.

Name	4-Oxo-4H-1-benzopyran-2-carboxylic acid
Synonyms	4H-1-Benzopyran-2-carboxylic acid, 4-oxo- LP 1 MFCD00006838 Chromocarb 2-Chromonecarboxylic Acid EINECS 225-583-0 4-oxochromene-2-carboxylic acid 4-Oxo-4H-chromene-2-carboxylic acid Benzo-γ-pyronecarboxylic Acid ChroMone-2-carboxylic Acid

Description	Chromocarb is a synthetic vasoprotectant.
Related Catalog	Signaling Pathways >> Others >> Others Research Areas >> Cardiovascular Disease

Density	1.5±0.1 g/cm3
Boiling Point	337.0±42.0 °C at 760 mmHg
Melting Point	260 °C (dec.)(lit.)
Molecular Formula	C₁₀H₆O₄
Molecular Weight	190.152
Flash Point	138.9±21.4 °C
Exact Mass	190.026611
PSA	67.51000
LogP	1.65
Vapour Pressure	0.0±0.8 mmHg at 25°C
Index of Refraction	1.640
Water Solubility	sparingly soluble

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DJ2476000

CHEMICAL NAME :: 4H-1-Benzopyran-2-carboxylic acid, 4-oxo-

CAS REGISTRY NUMBER :: 4940-39-0

BEILSTEIN REFERENCE NO. :: 0146442

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C10-H6-O4

MOLECULAR WEIGHT :: 190.16

WISWESSER LINE NOTATION :: T66 BO EVJ CVQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 585 mg/kg

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

REFERENCE :: PHTXA6 Pharmacology and Toxicology. English translation of FATOAO. (New York, NY) V.20-22, 1957-59. Discontinued. Volume(issue)/page/year: 21,555,1958

Hazard Codes	Xi:Irritant;
Risk Phrases	R36/37/38
Safety Phrases	S26-S36-S37/39
WGK Germany	3
RTECS	DJ2476000
HS Code	2918300090

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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