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24459-54-9

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24459-54-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 24459-54-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,4,4,5 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 24459-54:
(7*2)+(6*4)+(5*4)+(4*5)+(3*9)+(2*5)+(1*4)=119
119 % 10 = 9
So 24459-54-9 is a valid CAS Registry Number.

24459-54-9Downstream Products

24459-54-9Relevant articles and documents

An unusual stereochemical outcome of radical cyclization: Synthesis of (+)-biotin

Chavan, Subhash P.,Chittiboyina, Amar G.,Ramakrishna, Guduru,Tejwani, Rajkumar B.,Ravindranathan,Kamat, Subhash K.,Rai, Beena,Sivadasan, Latha,Balakrishnan, Kamalam,Ramalingam,Deshpande

, p. 9273 - 9280 (2007/10/03)

An enantioselective synthesis of (+)-biotin 1 starting from naturally available cysteine is described. The key steps are the unusual stereochemical outcome of radical cyclization of compound 10 to prepare 5,5-fused system 11, and the introduction of C4-sidechain at C6 in 13 via a Grignard reaction.

A switch of reactivity profile in ionic intramolecular annulation reactions: A short and efficient synthesis of D-(+)-biotin

Chavan,Tejwani,Ravindranathan

, p. 6197 - 6201 (2007/10/03)

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