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21746-93-0

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21746-93-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21746-93-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,4 and 6 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21746-93:
(7*2)+(6*1)+(5*7)+(4*4)+(3*6)+(2*9)+(1*3)=110
110 % 10 = 0
So 21746-93-0 is a valid CAS Registry Number.

21746-93-0Relevant articles and documents

Synthesis of (-)-astrogorgiadiol

Taber, Douglass F.,Raciti, David M.

, p. 10229 - 10233 (2011)

Astrogorgiadiol is a naturally occurring Vitamin D analogue that, in cell culture, downregulates the production of the cytokine osteopontin (OPN). OPN has been implicated in virulent asthma, and OPN knockout mice do not develop osteoporosis. As we have pursued whole animal studies with astrogorgiadiol, we have increased the scale of the synthesis. We report an improved preparation of the A-ring synthon and the scale-up of the diasteromerically pure D-ring/sidechain chiron.

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