1-Oxyl-2,2,5,5-tetramethyl-3-cyano-3-pyrroline, also known as 3-CP or 3-cyanoproxyl, is a stable nitroxide radical with the chemical formula C9H14N2O. It is a derivative of the pyrroline ring structure, featuring a cyano group (-CN) at the 3-position and a hydroxyl group (-OH) at the 1-position, which is oxidized to a hydroxyl radical (-O?). 1-oxyl-2,2,5,5-tetramethyl-3-cyano-3-pyrroline is widely used as a spin trapping agent in electron paramagnetic resonance (EPR) spectroscopy to study short-lived free radicals in various chemical and biological systems. Its stability, solubility, and reactivity make it a valuable tool for probing radical reactions and understanding the underlying mechanisms in fields such as materials science, pharmaceuticals, and environmental chemistry.

2154-69-0

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Basic information
1. Product Name: 1-oxyl-2,2,5,5-tetramethyl-3-cyano-3-pyrroline
2. Synonyms: 1-oxyl-2,2,5,5-tetramethyl-3-cyano-3-pyrroline
3. CAS NO:2154-69-0
4. Molecular Formula:
5. Molecular Weight: 165.215
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: 1-oxyl-2,2,5,5-tetramethyl-3-cyano-3-pyrroline(CAS DataBase Reference)
10. NIST Chemistry Reference: 1-oxyl-2,2,5,5-tetramethyl-3-cyano-3-pyrroline(2154-69-0)
11. EPA Substance Registry System: 1-oxyl-2,2,5,5-tetramethyl-3-cyano-3-pyrroline(2154-69-0)
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: 2154-69-0(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 2154-69-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,5 and 4 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2154-69:
(6*2)+(5*1)+(4*5)+(3*4)+(2*6)+(1*9)=70
70 % 10 = 0
So 2154-69-0 is a valid CAS Registry Number.

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