55761-07-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55761-07-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,7,6 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 55761-07:
(7*5)+(6*5)+(5*7)+(4*6)+(3*1)+(2*0)+(1*7)=134
134 % 10 = 4
So 55761-07-4 is a valid CAS Registry Number.
55761-07-4Relevant articles and documents
Preparation of 7-ethoxy-3-hydroxy-6-methoxy-1-methyl-4-nitroisoquinoline
Barton,Fabian,Lam,Sterbenz
, p. 1397 - 1399 (1995)
This paper reports the large scale preparation of 7-ethoxy-3-hydroxy-6-methoxy-1-methyl-4-nitroisoquinoline (RWJ 19959, 2) from an available starting material, 4-ethoxy-3-methoxyphenylacetic acid (9). Previously 2 was prepared via a perchlorate salt which