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148840-81-7

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148840-81-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 148840-81-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,8,8,4 and 0 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 148840-81:
(8*1)+(7*4)+(6*8)+(5*8)+(4*4)+(3*0)+(2*8)+(1*1)=157
157 % 10 = 7
So 148840-81-7 is a valid CAS Registry Number.

148840-81-7Relevant articles and documents

A concise, efficient and flexible strategy for the synthesis of the pheromones of Oryzaephilus and Cryptolesters grain beetles

Boden,Chambers,Stevens

, p. 411 - 420 (1993)

Six of the seven macrolide components of the pheromone systems of grain beetles of the genera Oryzaephilus and Cryptolestes are synthesised by new routes of greatly improved efficiency. Iterative methodology based on the Wittig olefination is employed for

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