103475-52-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 103475-52-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,4,7 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 103475-52:
(8*1)+(7*0)+(6*3)+(5*4)+(4*7)+(3*5)+(2*5)+(1*2)=101
101 % 10 = 1
So 103475-52-1 is a valid CAS Registry Number.
103475-52-1Relevant academic research and scientific papers
Stereochemistry of 13-Hydroxyprotoberberines, Their Derivatives, and a Protopine-Type Alkaloid
Iwasa, Kinuko,Sugiura, Makiko,Takao, Narao
, p. 4275 - 4280 (2007/10/02)
13C NMR and 1H NMR spectral analyses have been used to establish the conformational structure of ophiocarpine (1), epiophiocarpine (2), their acetates and corresponding N-quaternary salts, and allocryptopine (5).
