631900-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 631900-21-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,1,9,0 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 631900-21:
(8*6)+(7*3)+(6*1)+(5*9)+(4*0)+(3*0)+(2*2)+(1*1)=125
125 % 10 = 5
So 631900-21-5 is a valid CAS Registry Number.
631900-21-5Relevant academic research and scientific papers
Kirsch, Stefan,Bach, Thorsten
, p. 4685 - 4687 (2003)
A high functional-group density necessitated the careful choice of protection/deprotection strategy for the successful stereoselective total synthesis of the marine polyketide (+)-wailupemycin B (1) from (S)-carvone in 6% overall yield. Key to the success
