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30391-09-4

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30391-09-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 30391-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,3,9 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 30391-09:
(7*3)+(6*0)+(5*3)+(4*9)+(3*1)+(2*0)+(1*9)=84
84 % 10 = 4
So 30391-09-4 is a valid CAS Registry Number.

30391-09-4Downstream Products

30391-09-4Relevant articles and documents

Auto-redox reaction: Tin(II) chloride-mediated one-step reductive cyclization leading to the synthesis of novel biheterocyclic 5,6-dihydro-quinazolino[4,3-b]quinazolin-8-ones with three-point diversity

Roy, Abhijeet Deb,Subramanian, Arunachalam,Roy, Raja

, p. 382 - 385 (2007/10/03)

A tin (II) chloride-mediated short, efficient, and practical regioselective synthesis of biheterocyclic 5,6-dihydro-quinazolino[4,3-b]quinazolin-8-ones with three-point diversity is reported. A one-step reductive transformation of 2-(2-nitro-phenyl)-3H-quinazolin-4-one in various alcohols furnished the desired tetracyclic product in good yields with high purity.

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