39720-28-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39720-28-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,7,2 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 39720-28:
(7*3)+(6*9)+(5*7)+(4*2)+(3*0)+(2*2)+(1*8)=130
130 % 10 = 0
So 39720-28-0 is a valid CAS Registry Number.
39720-28-0Relevant articles and documents
Quinone methide photograhpic reagent precursors
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, (2008/06/13)
Novel compounds are disclosed which release a photographic reagent in the presence of alkali and are therefore useful in photographic products and processes. The compounds may be defined as quinone- or naphthoquinonemethide precursors containing a mercapt