317817-11-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 317817-11-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,7,8,1 and 7 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 317817-11:
(8*3)+(7*1)+(6*7)+(5*8)+(4*1)+(3*7)+(2*1)+(1*1)=141
141 % 10 = 1
So 317817-11-1 is a valid CAS Registry Number.
317817-11-1Relevant articles and documents
A bicyclo[3.2.0]hept-3-en-6-one approach to prostaglandin intermediates
Marotta, Emanuela,Righi, Paolo,Rosini, Goffredo
, p. 4145 - 4148 (2000)
(equation presented) The substituted cyclopentanic structures, 6-benzyloxymethyl-7-hydroxy-2-oxabicyclo[3.3.0]octan-3-one (1), a Corey lactone derivative, and 6-exobenzyloxymethyl-2-oxabicyclo[3.3.0]oct-7-en-3-one (2), have been obtained stereoselectively