81233-91-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81233-91-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,3 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81233-91:
(7*8)+(6*1)+(5*2)+(4*3)+(3*3)+(2*9)+(1*1)=112
112 % 10 = 2
So 81233-91-2 is a valid CAS Registry Number.
81233-91-2Relevant articles and documents
Stereospecific synthesis of clomiphene and tamoxifen via stannylcupration of diphenylacetylene
Cummins
, p. 4071 - 4079 (1995)
Stereospecific trans-stannylcupration of diphenylacetylene affords a 1,2-dimetallostilbene which may be elaborated into either Clomiphene or Tamoxifen through palladium-catalyzed coupling with an aryl iodide.