2,3-Benzo-fluoren, also known as benzo[a]fluorene, is a polycyclic aromatic hydrocarbon (PAH) consisting of a benzene ring fused to a fluorene structure. It is a colorless solid with a molecular formula of C20H12 and a molecular weight of 252.31 g/mol. 2,3-Benzo-fluoren is formed during the incomplete combustion of organic materials, such as coal, oil, and tobacco, and is considered a potential environmental pollutant due to its carcinogenic properties. 2,3-Benzo-fluoren has been classified as a Group 2B carcinogen by the International Agency for Research on Cancer (IARC), indicating that it is possibly carcinogenic to humans. It is also known to be toxic to aquatic life and can accumulate in the environment, posing risks to both human health and ecosystems.

243-16-3

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Basic information
1. Product Name: 2,3-Benzo-fluoren
2. Synonyms: 2,3-Benzo-fluoren
3. CAS NO:243-16-3
4. Molecular Formula:
5. Molecular Weight: 216.282
6. EINECS: N/A
7. Product Categories: N/A
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: 2,3-Benzo-fluoren(CAS DataBase Reference)
10. NIST Chemistry Reference: 2,3-Benzo-fluoren(243-16-3)
11. EPA Substance Registry System: 2,3-Benzo-fluoren(243-16-3)
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: 243-16-3(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 243-16-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,4 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 243-16:
(5*2)+(4*4)+(3*3)+(2*1)+(1*6)=43
43 % 10 = 3
So 243-16-3 is a valid CAS Registry Number.

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