1257655-54-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1257655-54-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,6,5 and 5 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1257655-54:
(9*1)+(8*2)+(7*5)+(6*7)+(5*6)+(4*5)+(3*5)+(2*5)+(1*4)=181
181 % 10 = 1
So 1257655-54-1 is a valid CAS Registry Number.
1257655-54-1Relevant articles and documents
Structural revision and synthesis of altechromone A
Koenigs,Rinker,Maus,Nieger,Rheinheimer,Waldvogel
supporting information; experimental part, p. 2064 - 2066 (2011/03/20)
The chromone "altechromone A" was synthesized as a substructure in the course of natural product synthesis. Its architecture was verified by X-ray analysis, but spectroscopic data showed a strong deviation from the reported data. By comparison with the sy
