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148839-52-5

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148839-52-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 148839-52-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,8,8,3 and 9 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 148839-52:
(8*1)+(7*4)+(6*8)+(5*8)+(4*3)+(3*9)+(2*5)+(1*2)=175
175 % 10 = 5
So 148839-52-5 is a valid CAS Registry Number.

148839-52-5Relevant articles and documents

COMBINED DIRECTED METALATION-CROSS COUPLING STRATEGIES. A REGIOSPECIFIC ROUTE TO HETERORING-ANNELATED ortho-NAPHTHOQUINONES AND A SHORT SYNTHESIS OF β-LAPACHONE

Brandao, Marcos A. F.,Oliveira, Alaide Braga de,Snieckus, Victor

, p. 2437 - 2440 (2007/10/02)

A general combined metalation-cross coupling methodology (Scheme 1) for the regiospecific construction of heteroring fused o-naphthoquinones 8 is described and its application to a short synthesis of the antimalarial/antitumor natural product β-lapachone (14) is demonstrated.

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