22709-37-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22709-37-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,7,0 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 22709-37:
(7*2)+(6*2)+(5*7)+(4*0)+(3*9)+(2*3)+(1*7)=101
101 % 10 = 1
So 22709-37-1 is a valid CAS Registry Number.
22709-37-1Relevant articles and documents
Method for preparing 1-(4-chlorphenyl)-pyrazolidine-3-one
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Paragraph 0064-0065; 0072-0074; 0079; 0086-0088; 0091; 0098, (2021/02/10)
The invention relates to the field of bactericide synthesis, and discloses a method for preparing 1-(4-chlorphenyl)-pyrazolidine-3-one. The method comprises the following steps: 1) reacting parachloroaniline with acrylic acid to obtain an addition reactio