1971-67-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1971-67-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,7 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1971-67:
(6*1)+(5*9)+(4*7)+(3*1)+(2*6)+(1*7)=101
101 % 10 = 1
So 1971-67-1 is a valid CAS Registry Number.
1971-67-1Relevant articles and documents
A facile synthesis of 1β-hydroxytestosterone
Sharma, P K,Akhila, A
, p. 554 - 556 (2007/10/02)
A convenient synthesis of androst-4-en-1β,17β-diol-3-one (1β-hydroxytestosterone, 1) from 5α-androst-3-on-17β-benzoate (dihydrotestosterone benzoate) is described.
On various 1-methylsteroids of the androstane series
Romeo,Tortorella,Vetuschi
, p. 227 - 235 (2007/10/14)
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