137832-50-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137832-50-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,8,3 and 2 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137832-50:
(8*1)+(7*3)+(6*7)+(5*8)+(4*3)+(3*2)+(2*5)+(1*0)=139
139 % 10 = 9
So 137832-50-9 is a valid CAS Registry Number.
137832-50-9Relevant academic research and scientific papers
Neef,Steinmeyer
, p. 5073 - 5076 (1991)
A convenient synthetic strategy leading to 23-oxa-calcitriol and 23-oxa-10,19-methylene-calcitriol is disclosed.
