138415-79-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138415-79-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,4,1 and 5 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 138415-79:
(8*1)+(7*3)+(6*8)+(5*4)+(4*1)+(3*5)+(2*7)+(1*9)=139
139 % 10 = 9
So 138415-79-9 is a valid CAS Registry Number.
138415-79-9Relevant articles and documents
Convenient synthesis of 1,2,4-benzotrithiins from benzopentathiepin with phosphorus ylide
Sato, Ryu,Chino, Kenji
, p. 6345 - 6346 (1991)
Novel 1,2,4-benzotrithiins were synthesized in satisfactory yields by treatment of benzopentathiepin with alkylidenephosphoranes. In this reaction, benzopentathiepin was found to serve as a 1,5-dipole synthon.