204979-27-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204979-27-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,9,7 and 9 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 204979-27:
(8*2)+(7*0)+(6*4)+(5*9)+(4*7)+(3*9)+(2*2)+(1*7)=151
151 % 10 = 1
So 204979-27-1 is a valid CAS Registry Number.
204979-27-1Relevant articles and documents
An efficient synthesis of (±)-6,7-dimethoxy-1-oxo-2-(3-piperidyl)-1,2,3,4-tetrahydroisoquinoline
Kakefuda,Watanabe,Takahashi,Sakamoto,Tsukamoto
, p. 401 - 408 (2001)
The synthesis of (±)-6,7-dimethoxy-1-oxo-2-(3-piperidyl)-1, 2,3,4-tetrahydroisoquinoline (1) via the cyclization of dimethyl-acetal (3) under acidic condition is described.