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81331-47-7

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81331-47-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81331-47-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,3 and 1 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81331-47:
(7*8)+(6*1)+(5*3)+(4*3)+(3*1)+(2*4)+(1*7)=107
107 % 10 = 7
So 81331-47-7 is a valid CAS Registry Number.

81331-47-7Relevant articles and documents

Total Synthesis of Ionophore Antibiotic X-14547A

Nicolaou, K. C.,Papahatjis, D. P.,Claremon, D. A.,Magolda, R. L.,Dolle, R. E.

, p. 1440 - 1456 (2007/10/02)

A highly stereocontrolled and convergent total synthesis of optically active ionophore antibiotic X-14547A (1) was designed and carried out.Degradative reactions led to the key intermediates 3 and 6, which served as convenient comparison stages.The tetrah

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