1026688-54-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1026688-54-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,6,6,8 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1026688-54:
(9*1)+(8*0)+(7*2)+(6*6)+(5*6)+(4*8)+(3*8)+(2*5)+(1*4)=159
159 % 10 = 9
So 1026688-54-9 is a valid CAS Registry Number.
1026688-54-9Relevant articles and documents
Expedient total syntheses of rhein and diacerhein via fries rearrangement
Tisserand, Steve,Baati, Rachid,Nicolas, Marc,Mioskowski, Charles
, p. 8982 - 8983 (2007/10/03)
Short and practical total syntheses of rhein (1) and diacerhein (2) have been achieved via a Fries rearrangement and bis-carbonylation strategy followed by cyclization in molten salt, starting from dibromoester 7.
