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r-Naphthocoumarin, also known as 7-hydroxy-2-chromenone, is a chemical compound belonging to the coumarin family. It is a white crystalline solid with a molecular formula of C10H6O3 and a molecular weight of 174.16 g/mol. This organic compound is characterized by a fused ring structure consisting of a benzene ring and a lactone ring, with a hydroxyl group at the 7-position. r-Naphthocoumarin exhibits various biological activities, such as anti-inflammatory, antioxidant, and anticoagulant properties, making it a potential candidate for pharmaceutical applications. It can be synthesized through various methods, including the Pechmann condensation and the Knoevenagel condensation, and is often used as a building block for the synthesis of more complex coumarin derivatives.

2147-34-4

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Basic information
1. Product Name: r-Naphthocoumarin
2. Synonyms: 2H-benzo[h]chromen-2-one;7,8-benzocoumarin;benzo[1,2-b]coumarin;2H-naphtho[1,2-b]pyran-2-one;benzo[h]chromen-2-one;benzo[h]chromen-3-one;
3. CAS NO:2147-34-4
4. Molecular Formula: C13H8O2
5. Molecular Weight: 196.205
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 2147-34-4.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: r-Naphthocoumarin(CAS DataBase Reference)
10. NIST Chemistry Reference: r-Naphthocoumarin(2147-34-4)
11. EPA Substance Registry System: r-Naphthocoumarin(2147-34-4)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 2147-34-4(Hazardous Substances Data)

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2147-34-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2147-34-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,4 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 2147-34:
(6*2)+(5*1)+(4*4)+(3*7)+(2*3)+(1*4)=64
64 % 10 = 4
So 2147-34-4 is a valid CAS Registry Number.

2147-34-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017

1.Identification

1.1 GHS Product identifier

Product name	2H-Naphtho[1,2-b]pyran-2-on

1.2 Other means of identification

Product number	-
Other names	2H-benzo[h]chromen-2-one

1.3 Recommended use of the chemical and restrictions on use

Identified uses	For industry use only.
Uses advised against	no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number	-
Service hours	Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:2147-34-4 SDS

2147-34-4Upstream product

2147-34-4Downstream Products

21568-15-0 2,2-dimethyl-2,3-dihydro-benzo[h]chromen-4-one-(2,4-dinitro-phenylhydrazone)

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