55837-03-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55837-03-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,8,3 and 7 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 55837-03:
(7*5)+(6*5)+(5*8)+(4*3)+(3*7)+(2*0)+(1*3)=141
141 % 10 = 1
So 55837-03-1 is a valid CAS Registry Number.
55837-03-1Relevant articles and documents
Steroids 36: Synthesis of 16,16-dimethyl-17-ketosteroids and 16,16-dimethyl-17β-hydroxysteroids
Wolfling,Schneider,Dombi
, p. 329 - 335 (1988)
Direct conversion of 17-ketosteroids (Ia-f) into 16,16-dimethyl-17β-hydroxysteroids (IIa-f) and 16,16-dimethyl-17-ketosteroids (IIIa-f) was achieved with methyl iodide in the presence of NaH.
