127878-21-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 127878-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,8,7 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 127878-21:
(8*1)+(7*2)+(6*7)+(5*8)+(4*7)+(3*8)+(2*2)+(1*1)=161
161 % 10 = 1
So 127878-21-1 is a valid CAS Registry Number.
127878-21-1Relevant articles and documents
Diels-Alder reactions of 2H-thiopyrans
Ward,Zoghaib,Rhee,Gai
, p. 845 - 848 (1990)
Oxygenated 2H-thiopyrans react with typical dienophiles to produce predominantly endo adducts in modest to high yield. The adducts can be desulfurized to give compounds equivalent to a Diels-Alder adduct of a cis-diene.