109987-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109987-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,8 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 109987-17:
(8*1)+(7*0)+(6*9)+(5*9)+(4*8)+(3*7)+(2*1)+(1*7)=169
169 % 10 = 9
So 109987-17-9 is a valid CAS Registry Number.
109987-17-9Relevant academic research and scientific papers
Synthesis of Gerberinol-I
Chatterjea, J. N.,Singh, K. R. R. P.,Jha, I. S.,Prasad, Y.,Shaw, S. C.
, p. 796 - 798 (2007/10/02)
The synthesis of 4-hydroxy-5-methylcoumarin (II) is described.The compound (II) affords gerberinol-I (I) on treatment with formaldehyde.The synthetic sample of I is identical (m.m.p. and co-IR) with an authentic I.
