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4398-31-6

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4398-31-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4398-31-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,3,9 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4398-31:
(6*4)+(5*3)+(4*9)+(3*8)+(2*3)+(1*1)=106
106 % 10 = 6
So 4398-31-6 is a valid CAS Registry Number.

4398-31-6Relevant articles and documents

Synthesis of some substituted 5,6-dihydro-7H-benzo[c]xanthen-7-one and its aza analogues

Mohakhud, Pradeep K.,Goyal, Samta,Grover, Neeraj,Saradhi, K. Pardha,Parthasarathy

, p. 904 - 910 (2007/10/03)

Synthesis of 8,10,3′-trimethoxy-4′-hydroxy-5-carboxy-6-phenyl-5,6-dihydro-7H- benzo[c]xanthen7-ones 20 and 22, 8,10,4′-trimethoxy-6-phenyl-5,6-dihydro-5-aza-7H-benzo[c]xanthen-7-one 25 and 2,3,10,4′-tetramethoxy-5-phenyl-5,6,-dihydro-6-aza-7H-benzo[c]xant

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