67697-49-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67697-49-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,6,9 and 7 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 67697-49:
(7*6)+(6*7)+(5*6)+(4*9)+(3*7)+(2*4)+(1*9)=188
188 % 10 = 8
So 67697-49-8 is a valid CAS Registry Number.
67697-49-8Relevant articles and documents
3-(Pyrrolo and 3-indolyl)-3-diphenylamino substituted phthalides
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, (2008/06/13)
3-Heteroaryl-3-(diphenylamino)phthalides useful as color formers in pressure-sensitive carbonless duplicating systems, thermal marking systems and hectographic copying systems are prepared by reacting 2-(heteroarylcarbonyl)benzoic acids with diphenylamines.