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140408-91-9

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140408-91-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140408-91-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,4,0 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 140408-91:
(8*1)+(7*4)+(6*0)+(5*4)+(4*0)+(3*8)+(2*9)+(1*1)=99
99 % 10 = 9
So 140408-91-9 is a valid CAS Registry Number.

140408-91-9Downstream Products

140408-91-9Relevant articles and documents

Synthesis of Cyclopropyl Amino Acid Derivatives

Easton, Christopher J.,Tan, Eng Wui,Ward, Caroline M.

, p. 395 - 402 (2007/10/02)

Derivatives of α,β-methanovaline, α,β-methanophenylalanine and β-methyl-α,β-methanoalanine have been prepared by regioselective side-chain functionalization of suitably protected amino acid derivatives, followed by cyclization with either sodium hydride or 1,8-diazabicycloundec-7-ene.The approach used in this work illustrates a method for the synthesis of cyclopropyl amino acid derivatives which is complementary to existing procedures.

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