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139278-12-9

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139278-12-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139278-12-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,7 and 8 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139278-12:
(8*1)+(7*3)+(6*9)+(5*2)+(4*7)+(3*8)+(2*1)+(1*2)=149
149 % 10 = 9
So 139278-12-9 is a valid CAS Registry Number.

139278-12-9Relevant articles and documents

A rapid access to both enantiomers of 1,2,3,4-tetranor B-trienic 18,18,18-trifluorosteroids. The first enantiocontrolled total synthesis of 18,18,18-trifluorosteroids

Nemoto,Satoh,Fukumoto,Kabuto

, p. 594 - 600 (1995)

Chiral A-tetranor B-trienic 18,18,18-trifluorosteroid 2a and its enantiomer 1a were synthesised by the thermolysis of chiral olefinic benzocyclobutenes 7b and 7a which were in turn prepared by the aldol reaction of chiral oxazolidinone 5 and 11 with 2-(4-

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