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105539-69-3

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105539-69-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 105539-69-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,5,3 and 9 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 105539-69:
(8*1)+(7*0)+(6*5)+(5*5)+(4*3)+(3*9)+(2*6)+(1*9)=123
123 % 10 = 3
So 105539-69-3 is a valid CAS Registry Number.

105539-69-3Relevant articles and documents

Synthesis of Optically Pure Enantiomers of Grandisol

Webster, Francis X.,Silverstein, Robert M.

, p. 5226 - 5231 (2007/10/02)

The synthesis of both enantiomers of grandisol (1 and 1') of greater than 99percent optical purity is described.The key step is the separation of diastereomeric amides 11 and 12 and subsequent cleavage to give optically pure acids 8 and 8'.Since 8 and 8' contain a quaternary chiral center, the optical purity of derived grandisol 1 and 1' is ensured.

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