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77651-71-9

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77651-71-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77651-71-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,6,5 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 77651-71:
(7*7)+(6*7)+(5*6)+(4*5)+(3*1)+(2*7)+(1*1)=159
159 % 10 = 9
So 77651-71-9 is a valid CAS Registry Number.

77651-71-9Downstream Products

77651-71-9Relevant articles and documents

Phosphoramides. XIII. Phosphorus Pentaoxide-Amine Hydrochloride Mixtures as Reagents in the Synthesis of 4(3H)-Quinazolinones and 4-Quinazolinamines

Nielsen, Knud Erik,Pedersen, Erik B.

, p. 637 - 642 (2007/10/02)

4(3H)-Quinazolinones 3a-r have been prepared by heating methyl N-acylanthranilates 1a-c and the hydrochlorides of primary aliphatic and aromatic amines with phosphorus pentaoxide and N,N-dimethylcyclohexylamine at 180 deg C. 4-Quinazolinamines 4 and the amidine 7 were isolated as by-products.The carboxamides 5 and 6 were believed to be reaction intermediates.By raising the temperature to 250 deg C 4 was obtained in a preparative yield.

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