201654-80-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 201654-80-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,6,5 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 201654-80:
(8*2)+(7*0)+(6*1)+(5*6)+(4*5)+(3*4)+(2*8)+(1*0)=100
100 % 10 = 0
So 201654-80-0 is a valid CAS Registry Number.
201654-80-0Relevant academic research and scientific papers
Synthesis of 3-Butylidene-7-hydroxyphthalide
Mali, R.S.,Patil, S.R.
, p. 167 - 173 (2007/10/02)
A convenient synthesis of 3-butylidene-7-hydroxyphthalide (6) is described starting from 2-formyl-6-methoxybenzoic acid (1) via the intermediacy of iodophthalide (4).
