1026393-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1026393-21-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,6,3,9 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1026393-21:
(9*1)+(8*0)+(7*2)+(6*6)+(5*3)+(4*9)+(3*3)+(2*2)+(1*1)=124
124 % 10 = 4
So 1026393-21-4 is a valid CAS Registry Number.
1026393-21-4Relevant articles and documents
Synthesis of 2-methyl-9-oxo-9H-furo[2,3-c]benzo pyrans and 2-methyl- 3H,4H[1]benzopyrano[3,4-b]pyrrol-4-ones
Raghu Ram,Krupadanam,Srimannarayana
, p. 2421 - 2428 (2007/10/03)
3:4-Fused furocoumarins and pyrrolocoumarins are synthesised from 3- hydroxy and 3-benzamido- substituted coumarins by a novel two step sequence.
