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90121-04-3

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90121-04-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90121-04-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,1,2 and 1 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 90121-04:
(7*9)+(6*0)+(5*1)+(4*2)+(3*1)+(2*0)+(1*4)=83
83 % 10 = 3
So 90121-04-3 is a valid CAS Registry Number.

90121-04-3Relevant articles and documents

Direct preparation of (Z,Z)-1,4-dienic units with a new C6 homologating agent: Synthesis of α-linolenic acid

Sandri,Viala

, p. 271 - 275 (2007/10/02)

Syntheses of two C6 homologating agents 2a and 2f are described. These agents allow direct access to the (Z,Z)-1,4-diene unit 3, a moiety present in a wide number of natural compounds. Compound 2a is prepared in 40% overall yield by selective epoxidation of methoxycyclohexa-1,4-diene followed by oxidative ring cleavage and transatalization. Compound 2f is obtained in 90% yield by a one-step oxidative dimerization of phosphonium salt 1. A short synthetic application of these two new C6 homologating agents to the synthesis of α-linolenic acid is described.

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