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207509-01-1

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207509-01-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 207509-01-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,5,0 and 9 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 207509-01:
(8*2)+(7*0)+(6*7)+(5*5)+(4*0)+(3*9)+(2*0)+(1*1)=111
111 % 10 = 1
So 207509-01-1 is a valid CAS Registry Number.

207509-01-1Relevant articles and documents

A Synthesis of D-erythro- And L-threo-Sphingosine and Sphinganine Diastereomers via the Biomimetic Precursor 3-Ketosphinganine

Hoffman, Robert V.,Tao, Junhua

, p. 3979 - 3985 (2007/10/03)

The four stereoisomers of sphingosine and sphinganine can be produced in protected form by a short, convergent, biomimetic synthesis from serine. Yields are good (26-38% overall from commercially available serine derivatives), and the stereoselectivities are excellent (>92% de, >95% ee). Several sphingosine L-threo-sphingosine analogues with modified, functionalized tails were prepared to demonstrate the versatility of the method.

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