20521-91-9 Usage
Type of compound
Organophosphorus compound
Usage
Commonly used in the synthesis of pharmaceuticals and pesticides
Derivation
Reaction between 1-(dimethoxyphosphoryl)-2-methylprop-1-en-1-yl alcohol and 2-methylpropanoic acid
Physical state
Colorless, flammable liquid
Odor
Fruity
Hazards
Skin and eye irritant
Safety precautions
Handle with caution and follow proper safety protocols in laboratory or industrial settings
Check Digit Verification of cas no
The CAS Registry Mumber 20521-91-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,2 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20521-91:
(7*2)+(6*0)+(5*5)+(4*2)+(3*1)+(2*9)+(1*1)=69
69 % 10 = 9
So 20521-91-9 is a valid CAS Registry Number.