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137897-48-4

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137897-48-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137897-48-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,8,9 and 7 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 137897-48:
(8*1)+(7*3)+(6*7)+(5*8)+(4*9)+(3*7)+(2*4)+(1*8)=184
184 % 10 = 4
So 137897-48-4 is a valid CAS Registry Number.

137897-48-4Downstream Products

137897-48-4Relevant articles and documents

Oxidative addition of azide anion to triisopropylsilyl enol ethers: Synthesis of α-azido ketones and 2-amino(methoxycarbonyl)alk-2-en-1-ones

Magnus, Philip,Barth, Lisa

, p. 11075 - 11086 (2007/10/02)

Treatment of triisopropylsilyl enol ethers with ceric ammonium nitrate/sodium azide at -20°C in acetonitrile gives α-azido ketones in average to good yields (50-80%). Subsequent conversion of the α-azido ketones into 2-amino(methoxycarbonyl)cycloalk-2-en-1-ones is described.

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