77128-46-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77128-46-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,1,2 and 8 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 77128-46:
(7*7)+(6*7)+(5*1)+(4*2)+(3*8)+(2*4)+(1*6)=142
142 % 10 = 2
So 77128-46-2 is a valid CAS Registry Number.
77128-46-2Relevant articles and documents
STEREOSPECIFIC PHOTOCYCLIZATION OF α-BISULFENYLATED KETO COMPOUNDS. CIS-DIHYDROBENZOTHIOPHENES.
Sasaki, Tadashi,Hayakawa, Kenji,Nishida, Sumio
, p. 3903 - 3906 (2007/10/02)
Irradiation of α-bisulfenylated keto compounds in acetonitrile affords the cis-fused dihydrobenzothiophenes which are dehydrated to benzothiophenes in high yields.