138043-39-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138043-39-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,0,4 and 3 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 138043-39:
(8*1)+(7*3)+(6*8)+(5*0)+(4*4)+(3*3)+(2*3)+(1*9)=117
117 % 10 = 7
So 138043-39-7 is a valid CAS Registry Number.
138043-39-7Relevant articles and documents
STEREOSELECTIVE CYCLOPROPANATION OF HOMOALLYLIC ALCOHOLS. FORMAL ATTACHMENT OF A CYCLOPROPANE TO A PREEXISTING RING
Winkler, Jeffrey D.,Gretler, Elizabeth A.
, p. 5733 - 5736 (1991)
Complementary methods for the formal attachment of a cyclopropane to a preexisting ring system that lead to the exclusive formation of either of two possible relative stereochemical relationships are described.
