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140837-99-6

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140837-99-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140837-99-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,8,3 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 140837-99:
(8*1)+(7*4)+(6*0)+(5*8)+(4*3)+(3*7)+(2*9)+(1*9)=136
136 % 10 = 6
So 140837-99-6 is a valid CAS Registry Number.

140837-99-6Downstream Products

140837-99-6Relevant articles and documents

USE OF t-BUTYL 4-DIETHYLPHOSPHONO-3-OXOBUTANETHIOATE FOR TETRAMIC ACID SYNTHESIS: TOTAL SYNTHESIS OF THE PLASMODIAL PIGMENT FULIGORUBIN A

Ley, Steven V.,Smith, Stephen C.,Woodward, Peter R.

, p. 5829 - 5832 (1988)

A short, efficient synthesis of the yellow slime mould pigment fuligorubin A (I) has been achieved using coupling of t-butyl 4-diethylphosphono-3-oxobutanethioate with deca-2,4,6,8-tetraenal and subsequent substitution with a glutamic acid derivative followed by Dieckmann cyclisation.

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