138751-83-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138751-83-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,5 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138751-83:
(8*1)+(7*3)+(6*8)+(5*7)+(4*5)+(3*1)+(2*8)+(1*3)=154
154 % 10 = 4
So 138751-83-4 is a valid CAS Registry Number.
138751-83-4Relevant academic research and scientific papers
Biomimetic Synthesis of Theonellin Isocyanide
Ichikawa, Yoshiyasu
, p. 2135 - 2140 (2007/10/02)
A marine sesquiterpene of the theonellin class has been synthesized for the first time.Direct amination of the theonelline carbon framework 2 in a biomimetic fashion, a crucial step, was achieved by employing a triflic acid-promoted Ritter-type reaction a
