158304-80-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158304-80-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,3,0 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 158304-80:
(8*1)+(7*5)+(6*8)+(5*3)+(4*0)+(3*4)+(2*8)+(1*0)=134
134 % 10 = 4
So 158304-80-4 is a valid CAS Registry Number.
158304-80-4Relevant articles and documents
Synthesis of (±)-fredericamycin A
Wendt, John A.,Gauvreau, Paul J.,Bach, Robert D.
, p. 9921 - 9926 (1994)
The synthesis of (±)-fredericamycin A (1) is reported with full experimental detail. Preparations of building blocks for the upper (2) and lower (3) units of 1 are described. The union of 2 and 3 by a two-step 1,4-dipolar cycloaddition and the elaboration
