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14398-58-4

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14398-58-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 14398-58-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,3,9 and 8 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 14398-58:
(7*1)+(6*4)+(5*3)+(4*9)+(3*8)+(2*5)+(1*8)=124
124 % 10 = 4
So 14398-58-4 is a valid CAS Registry Number.

14398-58-4Relevant articles and documents

Synthesis of 9-cis-retinoic acid and C-20-[3H3C]-9-cis-retinoic acid with high specific activity

Tadikonda, Praveen K.,Lacy, James M.,Rigdon, Michael G.,Deluca, Hector F.

, p. 1 - 10 (2007/10/03)

The synthesis of 9-cis-retinoic acid starting from 2,2,6-trimethylcyclohexanone is described. The same methodology was extended for the synthesis of deuterium and tritium labeled 9-cis-retinoic acid with high specific activity (73 Ci/mmol). In this methodology, a Grignard reaction was utilized for introducing three tritium atoms simultaneously in the final synthetic steps.

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