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91758-39-3

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91758-39-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91758-39-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,5 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91758-39:
(7*9)+(6*1)+(5*7)+(4*5)+(3*8)+(2*3)+(1*9)=163
163 % 10 = 3
So 91758-39-3 is a valid CAS Registry Number.

91758-39-3Relevant articles and documents

Chemistry of shikimic acid derivatives. Synthesis of specyfically labeled shikimic acid at C-3 or C-4

Zamir, Lolita O.,Luthe, Corinne

, p. 1169 - 1175 (2007/10/02)

Specifically labeled shikimic acids with tritium or deuterium at posiions C-3 or C-4 were synthesized.Commercially available L-shikimic acid was converted to its 3- and 4-ketones, after suitable protection of the hydroxyl groups at C-4, C-5 and C-3, C-5.Reduction of the 3-keto or 4-keto-shikimic acid derivatives with sodium borodeuteride and deprotection gave mostly 3-D-epi-shikimic acid or 4-D-shikimic acid.An internally assisted inversion of the 3-D-epi-shikimic acid derivative and deprotection gave 3-D-shikimic acid.

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