5-Isobenzofurandiazonium, 1,3-dihydro-1-oxo-, tetrafluoroborate(1-) is a chemical compound with the molecular formula C7H4BF4N3O. It is a derivative of isobenzofuran, a heterocyclic aromatic compound, and features a diazonium group attached to the 5-position. The compound is characterized by its 1,3-dihydro-1-oxo structure, indicating the presence of a hydroxyl group and a carbonyl group. The tetrafluoroborate(1-) ion serves as a counterion, providing stability to the overall structure. 5-Isobenzofurandiazonium, 1,3-dihydro-1-oxo-, tetrafluoroborate(1-) is often used in chemical synthesis and as an intermediate in the preparation of various organic compounds, particularly those involving diazonium salts. Its properties and reactivity make it a valuable tool in organic chemistry, though it should be handled with care due to its potential reactivity and sensitivity to light and heat.

319-57-3

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Basic information
1. Product Name: 5-Isobenzofurandiazonium, 1,3-dihydro-1-oxo-, tetrafluoroborate(1-)
2. Synonyms:
3. CAS NO:319-57-3
4. Molecular Formula: C8H5N2O2.BF4
5. Molecular Weight: 247.94
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 319-57-3.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: 5-Isobenzofurandiazonium, 1,3-dihydro-1-oxo-, tetrafluoroborate(1-)(CAS DataBase Reference)
10. NIST Chemistry Reference: 5-Isobenzofurandiazonium, 1,3-dihydro-1-oxo-, tetrafluoroborate(1-)(319-57-3)
11. EPA Substance Registry System: 5-Isobenzofurandiazonium, 1,3-dihydro-1-oxo-, tetrafluoroborate(1-)(319-57-3)
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: 319-57-3(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 319-57-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,1 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 319-57:
(5*3)+(4*1)+(3*9)+(2*5)+(1*7)=63
63 % 10 = 3
So 319-57-3 is a valid CAS Registry Number.

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