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1256381-25-5

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1256381-25-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256381-25-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,3,8 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1256381-25:
(9*1)+(8*2)+(7*5)+(6*6)+(5*3)+(4*8)+(3*1)+(2*2)+(1*5)=155
155 % 10 = 5
So 1256381-25-5 is a valid CAS Registry Number.

1256381-25-5Downstream Products

1256381-25-5Relevant academic research and scientific papers

Formal synthesis of salinosporamide A via NHC-catalyzed intramolecular lactonization

Struble, Justin R.,Bode, Jeffrey W.

experimental part, p. 4957 - 4967 (2009/11/30)

An N-heterocyclic carbene (NHC) catalyzed intramolecular lactonization to prepare densely functionalized bicyclic γ-lactam-γ-lactone adducts from enals is reported. This method has been applied to the formal synthesis of salinosporamide A, a potent 20S pr

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