74920-45-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74920-45-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,9,2 and 0 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 74920-45:
(7*7)+(6*4)+(5*9)+(4*2)+(3*0)+(2*4)+(1*5)=139
139 % 10 = 9
So 74920-45-9 is a valid CAS Registry Number.
74920-45-9Relevant articles and documents
Synthesis method of radioactive isotope carbon-14 labeled Dufulin
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Paragraph 0022, (2019/07/17)
The invention belongs to the field of radiochemical synthesis, and particularly relates to a synthesis method of radioactive isotope carbon-14 labeled Dufulin (N-[2-(4-methyl[phenyl-U-C]benzothiazolyl)]-2-amino-2-fluorophenyl-O,O-diethylmethylphosp