2',4'-Dinitro-4-methoxy-diphenylselenid, also known as 2,4-dinitro-4-methoxydiphenylselenide, is an organic compound with the chemical formula C13H10N2O5Se. It is a yellow crystalline solid that is soluble in organic solvents such as ethanol and acetone. 2',4'-Dinitro-4-methoxy-diphenylselenid is characterized by the presence of two nitro groups (-NO2) at the 2' and 4' positions, a methoxy group (-OCH3) at the 4 position, and a selenium atom (Se) connecting two phenyl rings. It is primarily used in chemical research and as an intermediate in the synthesis of various organic compounds. Due to its reactivity and potential toxicity, it is important to handle 2',4'-Dinitro-4-methoxy-diphenylselenid with care and in accordance with proper safety protocols.

1657-90-5

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Basic information
1. Product Name: 2',4'-Dinitro-4-methoxy-diphenylselenid
2. Synonyms:
3. CAS NO:1657-90-5
4. Molecular Formula:
5. Molecular Weight: 353.193
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',4'-Dinitro-4-methoxy-diphenylselenid(CAS DataBase Reference)
10. NIST Chemistry Reference: 2',4'-Dinitro-4-methoxy-diphenylselenid(1657-90-5)
11. EPA Substance Registry System: 2',4'-Dinitro-4-methoxy-diphenylselenid(1657-90-5)
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: 1657-90-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 1657-90-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,5 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1657-90:
(6*1)+(5*6)+(4*5)+(3*7)+(2*9)+(1*0)=95
95 % 10 = 5
So 1657-90-5 is a valid CAS Registry Number.

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