90041-33-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90041-33-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,0,4 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 90041-33:
(7*9)+(6*0)+(5*0)+(4*4)+(3*1)+(2*3)+(1*3)=91
91 % 10 = 1
So 90041-33-1 is a valid CAS Registry Number.
90041-33-1Relevant 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.