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75238-84-5

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75238-84-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75238-84-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,2,3 and 8 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 75238-84:
(7*7)+(6*5)+(5*2)+(4*3)+(3*8)+(2*8)+(1*4)=145
145 % 10 = 5
So 75238-84-5 is a valid CAS Registry Number.

75238-84-5Relevant articles and documents

Ring Transformations of 4H-Pyrans. Pyridines from 2-Amino-4H-Pyrans

Seoane, Carlos,Soto, Jose L.,Zamorano, Pilar,Quinteiro, Margarita

, p. 309 - 314 (2007/10/02)

Ring transformations of 4H-pyrans into pyridines are reported.Treatment of 2-amino-4,6-diaryl-3,5-dicyano-4H-pyrans (I) with nitrosylsulfuric acid brings about their transformation into 3,5-dicyano-4,6-diaryl-2-pyridones (VI) which can also be obtained fr

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