137789-90-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137789-90-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,7,8 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137789-90:
(8*1)+(7*3)+(6*7)+(5*7)+(4*8)+(3*9)+(2*9)+(1*0)=183
183 % 10 = 3
So 137789-90-3 is a valid CAS Registry Number.
137789-90-3Relevant articles and documents
Total syntheses of (±) cervinomycins A1 and A2
Rama Rao,Yadav,Kishta Reddy,Upender, Velaparthi
, p. 5199 - 5202 (2007/10/02)
Regiocontrolled total syntheses of cervinomycins A1 (1) and A2 (2_have been achieved from easily accessible 6-acetyl-2-bromo-1,4,-dimethoxynaphthalene (4).
