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890657-56-4

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890657-56-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 890657-56-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,0,6,5 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 890657-56:
(8*8)+(7*9)+(6*0)+(5*6)+(4*5)+(3*7)+(2*5)+(1*6)=214
214 % 10 = 4
So 890657-56-4 is a valid CAS Registry Number.

890657-56-4Downstream Products

890657-56-4Relevant articles and documents

One-pot regioselective annulation toward 3,4-dihydro-3-oxo-2H-1,4-benzoxazine scaffolds under controlled microwave heating

Feng, Gaofeng,Wu, Jinlong,Dai, Wei-Min

, p. 4635 - 4642 (2006)

An efficient and general synthesis of 2-alkyl-3,4-dihydro-3-oxo-2H-1,4-benzoxazines under controlled microwave heating has been established. It consists of a microwave-assisted reductive N-arylmethylation of substituted 2-aminophenols with aromatic aldehy

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