25300-23-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 25300-23-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,3,0 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 25300-23:
(7*2)+(6*5)+(5*3)+(4*0)+(3*0)+(2*2)+(1*3)=66
66 % 10 = 6
So 25300-23-6 is a valid CAS Registry Number.
25300-23-6Relevant articles and documents
Preparation method of 4-bromoethyl-2-trimethylsilyl ethynylbenzene-1-sulfuryl fluoride
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Paragraph 0118; 0119; 0120; 0122; 0123, (2018/11/22)
The invention discloses a preparation method of 4-bromoethyl-2-trimethylsilyl ethynylbenzene-1-sulfuryl fluoride. The preparation method comprises the steps of taking 2-halogen-4-methylaniline as a raw material for diazotization, sulfonylation, fluoridati