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80631-86-3

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80631-86-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80631-86-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,6,3 and 1 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 80631-86:
(7*8)+(6*0)+(5*6)+(4*3)+(3*1)+(2*8)+(1*6)=123
123 % 10 = 3
So 80631-86-3 is a valid CAS Registry Number.

80631-86-3Relevant articles and documents

IMPROVED SYNTHESIS OF RACEMIC CHORISMIC ACID. CLAISEN REARRANGEMENT OF 4-EPI-CHORISMIC ACID AND DIMETHYL 4-EPI-CHORISMATE.

Hoare,Policastro,Berchtold

, p. 6264 - 6267 (2007/10/02)

The total synthesis of racemic chorismic acid (1) in eleven steps (6% overall yield) from methyl cyclohex-1-ene-4-carboxylate (9) is described. Dimethyl 4-epi-chorismate (8) and 4-epi-chorismic acid (6) are prepared by similar procedures, and their rate of Claisen rearrangement is investigated. A convenient preparation of disodium prephenate (2) and disodium 4-epi-prephenate (5) from dimethyl chorismate (7) and 8, respectively, is described.

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