Isopropyl-methylphosphonic acid (IMPA) is an organophosphorus compound with the chemical formula C3H9O2P. It is a degradation product of the nerve agent sarin, which is a highly toxic substance used in chemical warfare. IMPA is formed when sarin breaks down in the environment or within the human body, and its presence can be used as a biomarker for exposure to sarin. The compound is colorless and odorless, and it is soluble in water. Due to its association with sarin, IMPA is of significant interest in the fields of chemical defense and forensic toxicology. It is important to note that while IMPA itself is not as acutely toxic as sarin, it is still considered a hazardous substance and requires careful handling.

4721-34-0

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Basic information
1. Product Name: isopropyl-methylphosphonic acid
2. Synonyms: isopropyl-methylphosphonic acid
3. CAS NO:4721-34-0
4. Molecular Formula:
5. Molecular Weight: 138.103
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: isopropyl-methylphosphonic acid(CAS DataBase Reference)
10. NIST Chemistry Reference: isopropyl-methylphosphonic acid(4721-34-0)
11. EPA Substance Registry System: isopropyl-methylphosphonic acid(4721-34-0)
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: 4721-34-0(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 4721-34-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,2 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4721-34:
(6*4)+(5*7)+(4*2)+(3*1)+(2*3)+(1*4)=80
80 % 10 = 0
So 4721-34-0 is a valid CAS Registry Number.

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