42493-02-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42493-02-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,4,9 and 3 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 42493-02:
(7*4)+(6*2)+(5*4)+(4*9)+(3*3)+(2*0)+(1*2)=107
107 % 10 = 7
So 42493-02-7 is a valid CAS Registry Number.
42493-02-7Relevant articles and documents
3-Amidocoumaranones
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, (2008/06/13)
3-Amidocoumaranones which may be substituted in the benzene ring by halo or alkyl; the compounds are obtained by treating an appropriate 2-hydroxyphenylacetic acid lactone with nitrous acid or with an ester, salt or chloride of nitrous acid in an acid med
