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668996-15-4

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668996-15-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 668996-15-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,8,9,9 and 6 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 668996-15:
(8*6)+(7*6)+(6*8)+(5*9)+(4*9)+(3*6)+(2*1)+(1*5)=244
244 % 10 = 4
So 668996-15-4 is a valid CAS Registry Number.

668996-15-4Downstream Products

668996-15-4Relevant articles and documents

Novel 3′-deoxy analogs of the anti-HBV agent entecavir: Synthesis of enantiomers from a single chiral epoxide

Ruediger, Edward,Martel, Alain,Meanwell, Nicholas,Solomon, Carola,Turmel, Brigitte

, p. 739 - 742 (2007/10/03)

A synthesis of novel 3′-deoxy analogs of the anti-HBV agent entecavir (BMS-200475) was devised using regioselective ring opening of suitable cyclopentene epoxides as the key step. This versatile approach afforded access to an enantiomeric pair of carbocyclic nucleosides from a single chiral intermediate.

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