639008-42-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 639008-42-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,9,0,0 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 639008-42:
(8*6)+(7*3)+(6*9)+(5*0)+(4*0)+(3*8)+(2*4)+(1*2)=157
157 % 10 = 7
So 639008-42-7 is a valid CAS Registry Number.
639008-42-7Relevant articles and documents
A facile and convergent synthesis of sarmentosin
Xu, Rui,Bai, Donglu
, p. 3355 - 3363 (2007/10/03)
A concise synthesis of sarmentosin (1) starting from butane-1,2,4-triol-1,2-acetonide is described. This convergent route can also be employed for the preparation of sarmentosin analogues for structure-activity relationship studies.