1026003-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1026003-81-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,6,0,0 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1026003-81:
(9*1)+(8*0)+(7*2)+(6*6)+(5*0)+(4*0)+(3*3)+(2*8)+(1*1)=85
85 % 10 = 5
So 1026003-81-5 is a valid CAS Registry Number.
1026003-81-5Relevant articles and documents
A convenient synthesis of thiophenes from β,γ-epoxycarbonyl compounds
Kang,U
, p. 2647 - 2653 (1995)
β,γ-Epoxycarbonyl compounds were converted to thiophenes when treated with Lawesson's reagent in the presence of a catalytic amount of p-toluenesulfonic acid.