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249537-15-3

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249537-15-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 249537-15-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,9,5,3 and 7 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 249537-15:
(8*2)+(7*4)+(6*9)+(5*5)+(4*3)+(3*7)+(2*1)+(1*5)=163
163 % 10 = 3
So 249537-15-3 is a valid CAS Registry Number.

249537-15-3Relevant articles and documents

A short formal total synthesis of (±)-hirsutic acid

Revol, Guillaume,Fuchs, Christian,Zard, Samir Z.

, p. 927 - 931 (2013/02/22)

A short formal total synthesis of (±)-hirsutic acid is described using a Claisen rearrangement and a radical cascade as the key steps. The radical sequence involves an intermolecular addition of a radical derived from a xanthate followed by a cyclization and transfer of the xanthate group.

Enantio- and diastereoselective synthesis of 4'-α-substituted carbocyclic nucleosides

Kato, Keisuke,Suzuki, Hisaki,Tanaka, Hiromichi,Miyasaka, Tadashi

, p. 911 - 914 (2007/10/03)

Enantio- and diastereoselective synthesis of 4-α-alkylcarbovir derivatives 5 were achieved based on Sakai's asymmetric alkylation of β- keto esters. The key carbocyclic intermediate 14 was synthesized from 8 via an eleven-step sequence. Coupling of 14 with 2-amino-6-chloropurine followed by desilylation and subsequent hydrolysis gave the target compounds 5 in moderate yields.

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