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143658-50-8

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143658-50-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143658-50-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,6,5 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 143658-50:
(8*1)+(7*4)+(6*3)+(5*6)+(4*5)+(3*8)+(2*5)+(1*0)=138
138 % 10 = 8
So 143658-50-8 is a valid CAS Registry Number.

143658-50-8Relevant articles and documents

Synthesis of Mono- and Sesqui-terpenoids. XXI. Synthesis and Absolute Configuration of (E)-3-Formyl-(2,6,6-trimethyl-2-cyclohexenyl)-3-pentenal, a Sesquiterpenoid from a Marine Alga, Caulerpa ashmeadii

Mori, Kenji,Aki, Shinji

, p. 625 - 629 (2007/10/02)

A six-step synthesis of the enantiomers of (E)-3-formyl-(2,6,6-trimethyl-2-cyclohexenyl)-3-pentenal has been achieved, starting from the enantiomers of 2,4,4-trimethyl-2-cyclohexenol.By comparing the sign of the optical rotation of the naturally occurring

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